ASTM D3763-14
(Test Method)Standard Test Method for High Speed Puncture Properties of Plastics Using Load and Displacement Sensors
Standard Test Method for High Speed Puncture Properties of Plastics Using Load and Displacement Sensors
SIGNIFICANCE AND USE
4.1 This test method is designed to provide load versus deformation response of plastics under essentially multi-axial deformation conditions at impact velocities. This test method further provides a measure of the rate sensitivity of the material to impact.
4.2 Multi-axial impact response, while partly dependent on thickness, does not necessarily have a linear correlation with specimen thickness. Therefore, results should be compared only for specimens of essentially the same thickness, unless specific responses versus thickness formulae have been established for the material.
4.3 For many materials, there may be a specification that requires the use of this test method, but with some procedural modifications that take precedence when adhering to the specification. Therefore, it is advisable to refer to that material specification before using this test method. Table 1 of Classification System D4000 lists the ASTM materials standards that currently exist.
SCOPE
1.1 This test method covers the determination of puncture properties of rigid plastics over a range of test velocities.
1.2 Test data obtained by this test method are relevant and appropriate for use in engineering design.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Note 1: This standard and ISO 6603.2 address the same subject matter, but differ in technical content. The technical content and results shall not be compared between the two test methods.
General Information
Relations
Buy Standard
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D3763 − 14
StandardTest Method for
High Speed Puncture Properties of Plastics Using Load and
Displacement Sensors
This standard is issued under the fixed designation D3763; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 3. Terminology
1.1 This test method covers the determination of puncture 3.1 Definitions—For definitions see Terminology D883 and
properties of rigid plastics over a range of test velocities. for abbreviations see Terminology D1600.
1.2 Test data obtained by this test method are relevant and
4. Significance and Use
appropriate for use in engineering design.
4.1 This test method is designed to provide load versus
1.3 The values stated in SI units are to be regarded as
deformation response of plastics under essentially multi-axial
standard. No other units of measurement are included in this
deformation conditions at impact velocities. This test method
standard.
furtherprovidesameasureoftheratesensitivityofthematerial
1.4 This standard does not purport to address all of the to impact.
safety concerns, if any, associated with its use. It is the
4.2 Multi-axial impact response, while partly dependent on
responsibility of the user of this standard to establish appro-
thickness, does not necessarily have a linear correlation with
priate safety and health practices and determine the applica-
specimen thickness. Therefore, results should be compared
bility of regulatory limitations prior to use.
only for specimens of essentially the same thickness, unless
specific responses versus thickness formulae have been estab-
NOTE 1—This standard and ISO 6603.2 address the same subject
matter, but differ in technical content. The technical content and results
lished for the material.
shall not be compared between the two test methods.
4.3 For many materials, there may be a specification that
2. Referenced Documents requires the use of this test method, but with some procedural
modifications that take precedence when adhering to the
2.1 ASTM Standards:
specification. Therefore, it is advisable to refer to that material
D618 Practice for Conditioning Plastics for Testing
specification before using this test method. Table 1 of Classi-
D883 Terminology Relating to Plastics
fication System D4000 lists theASTM materials standards that
D1600 Terminology forAbbreviatedTerms Relating to Plas-
currently exist.
tics
D4000 Classification System for Specifying Plastic Materi-
5. Interferences
als
5.1 Inertial Effects—A loading function encountered when
E691 Practice for Conducting an Interlaboratory Study to
performing an instrumented impact test that may, in some
Determine the Precision of a Test Method
cases, confuse the interpretation of the test data. For further
2.2 ISO Standard:
definition and examples of inertial effects, refer to Appendix
ISO 6603.2 Plastics—Determination of Multi-axial Impact
X1.
Behavior of Rigid Plastics Part 2: Instrumented Puncture
Test
6. Apparatus
6.1 Thetestingmachineshallconsistoftwoassemblies,one
1 fixed and the other driven by a suitable method to achieve the
This test method is under the jurisdiction ofASTM Committee D20 on Plastics
and is the direct responsibility of Subcommittee D20.10 on Mechanical Properties.
required impact velocity (that is, hydraulic, pneumatic,
Current edition approved Dec. 1, 2014. Published December 2014. Originally
mechanical, or gravity):
ϵ1
approved in 1979. Last previous edition approved in 2010 as D3763 – 10 . DOI:
6.1.1 Clamp Assembly, consisting of two parallel rigid
10.1520/D3763-14.
plates with a 76.0 6 3.0 mm diameter hole in the center of
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
each. The hole edges shall be rounded to a radius of 0.8 6 0.4
Standards volume information, refer to the standard’s Document Summary page on
mm. Sufficient force must be applied (mechanically,
the ASTM website.
pneumatically, or hydraulically) to prevent slippage of the
Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
4th Floor, New York, NY 10036, http://www.ansi.org. specimen in the clamp during impact.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D3763 − 14
6.1.2 Plunger Assembly, consisting of a 12.70 6 0.13 mm dance with Section 7 of Practice D618, unless otherwise
diameter steel rod with a hemispherical end of the same specified by contract or relevant ASTM material specification.
diameter positioned perpendicular to, and centered on, the
8.2.1 By changing the conditioning and test temperature in
clamp hole. acontrolledmannerforagiventestvelocity,thetemperatureat
6.1.3 Other Geometries—Thedimensionsgivenin6.1.1and
which transition from ductile to brittle failure occurs can be
6.1.2 shall be the standard geometry. If other plunger or hole determined for most plastics.
sizes are used they shall be highlighted in the report. Correla-
NOTE 2—To facilitate high throughput during automated testing at
tions between various geometries have not been established.
temperatures other than ambient, it is often necessary to stack the
6.1.4 Load Sensing System—Aload cell of sufficiently high
specimens in a column with no airflow in between. To assure compliance
natural resonance frequency, as described in A1.1, used to- with Section 10 of Practice D618, the time to equilibrium must be
determined for a given material. A thermocouple may be placed at the
gether with a calibrating network for adjusting load sensitivity.
center of a specimen stack in which its height is equal to its minimum
6.1.5 Plunger Displacement Measurement System—A
width. Determine the time to reach equilibrium at the desired test
means of monitoring the displacement of the moving assembly
temperature. Experiments with materials having low thermal conductivity
during the loading and complete penetration of the specimen.
values have shown that more than 7.5 h of soak time was required before
This can be accomplished through the use of a suitable the stack center temperature fell within the tolerances specified in D618 at
a setpoint of -40°C. Two and a half additional hours were needed to reach
transducer or potentiometer attached directly to the system.
equilibrium. The opposite extreme was seen in a material of higher
Photographic or optical systems can also be utilized for
thermal conductivity that only required2hto reach equilibrium at -40°C.
measuring displacement.
6.1.5.1 Alternatively, displacement may be calculated as a
9. Speed of Testing
function of velocity and total available energy at initial impact,
9.1 For recommended testing speeds see 10.4.
along with increments of load versus time, using a micropro-
cessor.
10. Procedure
6.1.5.2 Some machines use an accelerometer, whose output
is used to calculate both load and displacement.
10.1 Test a minimum of five specimens at each specified
6.1.6 Display and Recording Instrumentation—Use any
speed.
suitable means to display and record the data developed from
10.2 Measure and record the thickness of each specimen to
the load and displacement-sensing systems, provided its re-
the nearest 0.025 mm at the center of the specimen. In the case
sponse characteristics are capable of presenting the data
of injection molded specimens, it is sufficient to measure and
sensed, with minimal distortion. The recording apparatus shall
record thickness for one specimen when it has been previously
record load and displacement simultaneously. For further
demonstrated that the thickness does not vary by more than
information, see A1.2.
5%.
6.1.6.1 The most rudimentary apparatus is a cathode-ray
oscilloscope with a camera. This approach also requires a 10.3 Clamp the specimen between the plates of the speci-
planimeter or other suitable device, capable of measuring the men holder, taking care to center the specimen for uniform
area under the recorded load-versus-displacement trace of the
gripping. Tighten the clamping plate in such a way as to
event with an accuracy of 65%. provide uniform clamping pressure to prevent slippage during
6.1.6.2 More sophisticated systems are commercially avail-
testing.
able. Most of them include computerized data reduction and
10.4 Set the test speed to the desired value. The testing
automatic printouts of results.
speed (movable-member velocity at the instant before contact
with the specimen) shall be as follows:
7. Test Specimen
10.4.1 For single-speed tests, use a velocity of 200 m/min.
7.1 Specimens must be large enough to be adequately
10.4.1.1 Other speeds may be used, provided they are
gripped in the clamp. In general, the minimum lateral dimen-
clearly stated in the report.
sion should be at least 13 mm greater than the diameter of the
10.4.2 Tomeasurethedependenceofpuncturepropertieson
hole in the clamp (see 6.1.1 and 10.9).
impact velocity, use a broad range of test speeds. Some
7.2 Specimens may be cut from injection-molded, extruded,
suggested speeds are 2.5, 25, 125, 200, and 250 m/min.
orcompressionmoldedsheet;ortheymaybecastormoldedto
10.5 Set the available energy so that the velocity slowdown
size.
isnomorethan20 %fromthebeginningofthetesttothepoint
of peak load. If the velocity should decrease by more than
8. Conditioning
20 %, discard the results and make additional tests on new
8.1 Conditioning—Condition the test specimens in accor-
specimens with more available energy.
dance with Procedure A in Practice D618 unless otherwise
specified by contract or the relevantASTM material specifica- NOTE 3—It is observed that when the available energy is at least three
timestheabsorbedenergyatthepeakloadvelocityslow-downislessthan
tion. Temperature and humidity tolerances shall be in accor-
20 %.
dance with Section 7 of Practice D618, unless otherwise
specified by contract or relevant ASTM material specification. 10.6 Place a safety shield around the specimen holder.
8.2 Test Conditions—Conduct tests at the same temperature 10.7 Make the necessary adjustments to data collection
and humidity used for conditioning with tolerances in accor- apparatus as required by the manufacturer’s instructions or
D3763 − 14
consult literature such as STP 936 for further information 12.1.10 If the effect of testing speeds was studied (see
regarding setting up data acquisition systems. 10.4.2).
10.8 Conduct the test, following the manufacturer’s instruc-
13. Precision and Bias
tions for the specific equipment used.
13.1 Tables 1-3 are based on a round robin conducted in
10.9 Remove the specimen and inspect the gripped portion
1996 in accordance with Practice E691, involving 7 materials
for striations or other evidence of slippage. If there is evidence
tested by 11 laboratories. For each material, all of the speci-
of slippage, modify the clamping conditions or increase the
mens were prepared at the laboratory of the company volun-
specimen size and repeat test procedures.
teering that material for the round robin. Ten specimens from
each material were sent to each participating laboratory. Each
11. Calculation
testresultwastheaverageof5individualdeterminations.Each
11.1 Using the load-versus-displacement trace and appro-
laboratory obtained 2 test results for each material.
priate scaling factors, calculate the following:
(Warning—The explanations of r and R (13.2 – 13.2.3) are
11.1.1 Peak load, in newtons.
only intended to present a meaningful way of considering the
11.1.2 Deflection, in millimetres, to the point where peak
approximate precision of this test method. The data in Tables
load first occurred.
1-3 should not be applied to acceptance or rejection of
11.1.3 From the area within the trace, calculate:
materials, as these data only apply to the materials tested in the
11.1.3.1 Energy, in joules, to the point where load first
round robin and are unlikely to be rigorously representative of
occurred.
other lots, conditions, materials, or laboratories. Users of this
11.1.3.2 Puncture energy absorbed. Calculated at a corre-
test method should apply the principles outlined in Practice
sponding point equal to a 50 % drop from the maximum load.
E691 to generate data specific to their materials and laboratory
Therefore, the point used for each test must be stated in the
(or between specific laboratories). The principles of 13.2 –
report.
13.2.3 would then be valid for such data.)
11.1.4 Load, deflection, energy, or combination thereof, at
13.2 Concept of r and R in Tables 1-3—If S and S have
r R
any other specific point of interest (see Appendix X1).
been calculated from a large enough body of data, and for test
11.2 For each series of tests, calculate the arithmetic mean
results that were averages from testing 5 specimens for each
for each of the above, to three significant figures.
test result, then the following applies:
11.3 Calculate the estimated standard deviations as follows:
13.2.1 Repeatability—Two test results obtained within one
1/2 laboratory shall be judged not equivalent if they differ by more
2 2
¯
ΣX 2nX
than the r value for that material. r is the interval representing
S 5S D (1)
n 2 1
the critical difference between two test results for the same
where:
S = estimated standard deviation,
X = value of a single determination,
Supporting data have been filed at ASTM International Headquarters and may
be obtained by requesting Research Report RR:D20-1234.
n = number of determinations, and
¯
= arithmetic mean of the set of determinations.
X
TABLE 1 Maximum Load
12. Report
NOTE 1—MU = microcellular urethane, CP = cellulose propionate.
12.1 Report the following information:
NOTE 2—Thicknesses were: aluminum, 0.031 in.; all others, 0.12 in.
12.1.1 Completeidentificationofthematerialtested,includ-
NOTE 3—1982 round robin data, including precision and bias
ing type, source, manufacturer’s code number, form and
statements, may be found in Appendix X4.
previous history,
A B C D
S , S , r, R,
12.1.2 Specimen size and thickness, r R
Material Mean, N
N N N N
12.1.3 Method of preparing test specimens (compression
(A) Aluminum 4094 75.38 349.0 211 977
molding, casting, etc.),
(B) ABS 3783 200.22 295.2 561 827
12.1.4 Geometry of clamp and plunger, if different from (C) MU 1704 110.53 149.6 309 419
(D) PC 6368 380.58 455.1 1066 1274
6.1.1 and 6.1.2,
(E) Polyester 4244 154.57 278.7 433 780
12.1.5 Source and types of equipment,
(F) CP 4889 377.24 424.6 1056 1189
(G) PP 2703
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
´1
Designation: D3763 − 10 D3763 − 14
Standard Test Method for
High Speed Puncture Properties of Plastics Using Load and
Displacement Sensors
This standard is issued under the fixed designation D3763; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
ε NOTE—Added research report information to Section 13 editorially in September 2010.
1. Scope*
1.1 This test method covers the determination of puncture properties of rigid plastics over a range of test velocities.
1.2 Test data obtained by this test method are relevant and appropriate for use in engineering design.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use.
NOTE 1—This specification does not closely conform to ISO 6603.2. The only similarity between the two tests is that they are both instrumented impact
tests. The differences in striker, fixture, and specimen geometries and in test velocity can produce significantly different test results. standard and
ISO 6603.2 address the same subject matter, but differ in technical content. The technical content and results shall not be compared between the two test
methods.
2. Referenced Documents
2.1 ASTM Standards:
D618 Practice for Conditioning Plastics for Testing
D883 Terminology Relating to Plastics
D1600 Terminology for Abbreviated Terms Relating to Plastics
D4000 Classification System for Specifying Plastic Materials
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
2.2 ISO Standard:
ISO 6603.2 Plastics—Determination of MultiaxialMulti-axial Impact Behavior of Rigid Plastics Part 2: Instrumented Puncture
Test
3. Terminology
3.1 Definitions—For definitions see Terminology D883 and for abbreviations see Terminology D1600.
4. Significance and Use
4.1 This test method is designed to provide load versus deformation response of plastics under essentially multiaxialmulti-axial
deformation conditions at impact velocities. This test method further provides a measure of the rate sensitivity of the material to
impact.
4.2 MultiaxialMulti-axial impact response, while partly dependent on thickness, does not necessarily have a linear correlation
with specimen thickness. Therefore, results should be compared only for specimens of essentially the same thickness, unless
specific responses versus thickness formulae have been established for the material.
This test method is under the jurisdiction of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.10 on Mechanical Properties.
Current edition approved July 1, 2010Dec. 1, 2014. Published July 2010December 2014. Originally approved in 1979. Last previous edition approved in 20082010 as
ϵ1
D3763 - 08.D3763 – 10 . DOI: 10.1520/D3763-10E01.10.1520/D3763-14.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D3763 − 14
4.3 For many materials, there may be a specification that requires the use of this test method, but with some procedural
modifications that take precedence when adhering to the specification. Therefore, it is advisable to refer to that material
specification before using this test method. Table 1 of Classification System D4000 lists the ASTM materials standards that
currently exist.
5. Interferences
5.1 Inertial Effects—A loading function encountered when performing an instrumented impact test that may, in some cases,
confuse the interpretation of the test data. For further definition and examples of inertial effects, refer to Appendix X1.
6. Apparatus
6.1 The testing machine shall consist of two assemblies, one fixed and the other driven by a suitable method to achieve the
required impact velocity (that is, hydraulic, pneumatic, mechanical, or gravity):
6.1.1 Clamp Assembly, consisting of two parallel rigid plates with a 76.0 6 3.0 mm diameter hole in the center of each. The
hole edges shall be rounded to a radius of 0.8 6 0.4 mm. Sufficient force must be applied (mechanically, pneumatically, or
hydraulically) to prevent slippage of the specimen in the clamp during impact.
6.1.2 Plunger Assembly, consisting of a 12.70 6 0.13 mm diameter steel rod with a hemispherical end of the same diameter
positioned perpendicular to, and centered on, the clamp hole.
6.1.3 Other Geometries—The dimensions given in 6.1.1 and 6.1.2 shall be the standard geometry. If other plunger or hole sizes
are used they shall be highlighted in the report. Correlations between various geometries have not been established.
6.1.4 Load Sensing System—A load cell of sufficiently high natural resonance frequency, as described in A1.1, used together
with a calibrating network for adjusting load sensitivity.
6.1.5 Plunger Displacement Measurement System—A means of monitoring the displacement of the moving assembly during the
loading and complete penetration of the specimen. This can be accomplished through the use of a suitable transducer or
potentiometer attached directly to the system. Photographic or optical systems can also be utilized for measuring displacement.
6.1.5.1 Alternatively, displacement may be calculated as a function of velocity and total available energy at initial impact, along
with increments of load versus time, using a microprocessor.
6.1.5.2 Some machines use an accelerometer, whose output is used to calculate both load and displacement.
6.1.6 Display and Recording Instrumentation—Use any suitable means to display and record the data developed from the load
and displacement-sensing systems, provided its response characteristics are capable of presenting the data sensed, with minimal
distortion. The recording apparatus shall record load and displacement simultaneously. For further information, see A1.2.
6.1.6.1 The most rudimentary apparatus is a cathode-ray oscilloscope with a camera. This approach also requires a planimeter
or other suitable device, capable of measuring the area under the recorded load-versus-displacement trace of the event with an
accuracy of 65 %.
6.1.6.2 More sophisticated systems are commercially available. Most of them include computerized data reduction and
automatic printouts of results.
7. Test Specimen
7.1 Specimens must be large enough to be adequately gripped in the clamp. In general, the minimum lateral dimension should
be at least 13 mm greater than the diameter of the hole in the clamp (see 6.1.1 and 10.9).
7.2 Specimens may be cut from injection-molded, extruded, or compression molded sheet; or they may be cast or molded to
size.
8. Conditioning
8.1 Conditioning—Condition the test specimens in accordance with Procedure A in Practice D618 unless otherwise specified by
contract or the relevant ASTM material specification. Temperature and humidity tolerances shall be in accordance with Section 7
of Practice D618, unless otherwise specified by contract or relevant ASTM material specification.
8.2 Test Conditions—Conduct tests at the same temperature and humidity used for conditioning with tolerances in accordance
with Section 7 of Practice D618, unless otherwise specified by contract or relevant ASTM material specification.
8.2.1 By changing the conditioning and test temperature in a controlled manner for a given test velocity, the temperature at
which transition from ductile to brittle failure occurs can be determined for most plastics.
NOTE 2—To facilitate high throughput during automated testing at temperatures other than ambient, it is often necessary to stack the specimens in a
column with no airflow in between. To assure compliance with Section 10 of Practice D618, the time to equilibrium must be determined for a given
material. A thermocouple may be placed at the center of a specimen stack in which its height is equal to its minimum width. Determine the time to reach
equilibrium at the desired test temperature. Experiments with materials having low thermal conductivity values have shown that more than 7.5 h of soak
time was required before the stack center temperature fell within the tolerances specified in D618 at a setpoint of -40°C. Two and a half additional hours
were needed to reach equilibrium. The opposite extreme was seen in a material of higher thermal conductivity that only required 2 h to reach equilibrium
at -40°C.
D3763 − 14
9. Speed of Testing
9.1 For recommended testing speeds see 10.4.
10. Procedure
10.1 Test a minimum of five specimens at each specified speed.
10.2 Measure and record the thickness of each specimen to the nearest 0.025 mm at the center of the specimen. In the case of
injection molded specimens, it is sufficient to measure and record thickness for one specimen when it has been previously
demonstrated that the thickness does not vary by more than 5 %.
10.3 Clamp the specimen between the plates of the specimen holder, taking care to center the specimen for uniform gripping.
Tighten the clamping plate in such a way as to provide uniform clamping pressure to prevent slippage during testing.
10.4 Set the test speed to the desired value. The testing speed (movable-member velocity at the instant before contact with the
specimen) shall be as follows:
10.4.1 For single-speed tests, use a velocity of 200 m/min.
10.4.1.1 Other speeds may be used, provided they are clearly stated in the report.
10.4.2 To measure the dependence of puncture properties on impact velocity, use a broad range of test speeds. Some suggested
speeds are 2.5, 25, 125, 200, and 250 m/min.
10.5 Set the available energy so that the velocity slowdown is no more than 20 % from the beginning of the test to the point
of peak load. If the velocity should decrease by more than 20 %, discard the results and make additional tests on new specimens
with more available energy.
NOTE 3—It is observed that when the available energy is at least three times the absorbed energy at the peak load velocity slow-down is less than 20 %.
10.6 Place a safety shield around the specimen holder.
10.7 Make the necessary adjustments to data collection apparatus as required by the manufacturer’s instructions or consult
literature such as STP 936 for further information regarding setting up data acquisition systems.
10.8 Conduct the test, following the manufacturer’s instructions for the specific equipment used.
10.9 Remove the specimen and inspect the gripped portion for striations or other evidence of slippage. If there is evidence of
slippage, modify the clamping conditions or increase the specimen size and repeat test procedures.
11. Calculation
11.1 Using the load-versus-displacement trace and appropriate scaling factors, calculate the following:
11.1.1 Peak load, in newtons.
11.1.2 Deflection, in millimetres, to the point where peak load first occurred.
11.1.3 From the area within the trace, calculate:
11.1.3.1 Energy, in joules, to the point where load first occurred.
11.1.3.2 TotalPuncture energy absorbed. The point for determining this has not been standardized. Calculated at a corresponding
point equal to a 50 % drop from the maximum load. Therefore, the point used for each test must be stated in the report.
11.1.4 Load, deflection, energy, or combination thereof, at any other specific point of interest (see Appendix X1).
11.2 For each series of tests, calculate the arithmetic mean for each of the above, to three significant figures.
11.3 Calculate the estimated standard deviations as follows:
1/2
2 ¯ 2
ΣX 2 nX
S 5S D (1)
n 2 1
where:
S = estimated standard deviation,
X = value of a single determination,
n = number of determinations, and
¯
= arithmetic mean of the set of determinations.
X
12. Report
12.1 Report the following information:
12.1.1 Complete identification of the material tested, including type, source, manufacturer’s code number, form and previous
history,
12.1.2 Specimen size and thickness,
Instrumented Impact Testing of Plastics and Composite Materials, ASTM STP 936, ASTM, 1986.
D3763 − 14
12.1.3 Method of preparing test specimens (compression molding, casting, etc.),
12.1.4 Geometry of clamp and plunger, if different from 6.1.1 and 6.1.2,
12.1.5 Source and types of equipment,
12.1.6 Speed of testing (see 10.4),
12.1.7 The point on the curve at which totalpuncture energy was calculated (see 11.1.3.2),
12.1.8 Average value and standard deviation for each of the properties listed in 11.1,
12.1.9 Whether or not any slippage of the specimens was detected, and
12.1.10 If the effect of testing speeds was studied (see 10.4.2).
13. Precision and Bias
13.1 Tables 1-3 are based on a round robin conducted in 1996 in accordance with Practice E691, involving 7 materials tested
by 11 laboratories. For each material, all of the specimens were prepared at the laboratory of the company volunteering that
material for the round robin. Ten specimens from each material were sent to each participating laboratory. Each test result was the
average of 5 individual determinations. Each laboratory obtained 2 test results for each material. (Warning—The explanations of
r and R (13.2 – 13.2.3) are only intended to present a meaningful way of considering the approximate precision of this test method.
The data in Tables 1-3 should not be applied to acceptance or rejection of materials, as these data only apply to the materials tested
in the round robin and are unlikely to be rigorously representative of other lots, conditions, materials, or laboratories. Users of this
test method should apply the principles outlined in
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.