ASTM D5868-01(2008)
(Test Method)Standard Test Method for Lap Shear Adhesion for Fiber Reinforced Plastic (FRP) Bonding
Standard Test Method for Lap Shear Adhesion for Fiber Reinforced Plastic (FRP) Bonding
SIGNIFICANCE AND USE
Due to the increased use of adhesively-bonded FRP as a result of the inherent advantages afforded by bonded rather than mechanically-fastened joints (particularly the alleviation of stress risers and stress cracking), there is a need for tests by which joints of various FRP substrates and adhesives may be compared. This test method is intended to meet such a need.
Additional information on significance and use may be found in Guide D 4896.
SCOPE
1.1 This test method describes a lap shear test for use in measuring the bonding characteristics of adhesives for joining fiber reinforced plastics to themselves and to metals. The method is applicable to random and fiber oriented FRP.
1.2 This test method is intended to complement Test Method D 1002 and extend the application to single-lap shear adhesive joints of fiber-reinforced plastic (FRP) adherends. This test method is useful for generating comparative apparent shear strength data for joints made from a number of FRP materials, providing a means by which FRP surface treatments may be compared.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered 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.
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Designation: D5868 − 01 (Reapproved2008)
Standard Test Method for
Lap Shear Adhesion for Fiber Reinforced Plastic (FRP)
1
Bonding
This standard is issued under the fixed designation D5868; 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 Bonded Rigid Plastic Lap-Shear Joints in Shear by Ten-
sion Loading
1.1 This test method describes a lap shear test for use in
D4896 Guide for Use of Adhesive-Bonded Single Lap-Joint
measuring the bonding characteristics of adhesives for joining
Specimen Test Results
fiber reinforced plastics to themselves and to metals. The
D5573 Practice for Classifying Failure Modes in Fiber-
method is applicable to random and fiber oriented FRP.
Reinforced-Plastic (FRP) Joints
1.2 ThistestmethodisintendedtocomplementTestMethod
E4 Practices for Force Verification of Testing Machines
D1002 and extend the application to single-lap shear adhesive
2.2 SAE Standard:
joints of fiber-reinforced plastic (FRP) adherends. This test
SAE J1525 Lap Shear Test for Automotive-Type Adhesives
3
method is useful for generating comparative apparent shear
for Fiber Reinforced Plastic (FRP) Bonding
strength data for joints made from a number of FRP materials,
providing a means by which FRP surface treatments may be 3. Terminology
compared.
3.1 Adhesive terminology for this test method is covered in
1.3 The values stated in inch-pound units are to be regarded Terminology D907.
as standard. The values given in parentheses are mathematical
4. Summary of Test Method
conversions to SI units that are provided for information only
and are not considered standard.
4.1 This test method describes a procedure for the testing of
lap shear bond strengths, using composite materials not rec-
1.4 This standard does not purport to address all of the
ommended in Test Method D3163 such as FRP.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5. Significance and Use
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. 5.1 Due to the increased use of adhesively-bonded FRPas a
result of the inherent advantages afforded by bonded rather
2. Referenced Documents than mechanically-fastened joints (particularly the alleviation
of stress risers and stress cracking), there is a need for tests by
2
2.1 ASTM Standards:
which joints of various FRP substrates and adhesives may be
D907 Terminology of Adhesives
compared. This test method is intended to meet such a need.
D1002 Test Method for Apparent Shear Strength of Single-
Lap-Joint Adhesively Bonded Metal Specimens by Ten- 5.2 Additional information on significance and use may be
found in Guide D4896.
sion Loading (Metal-to-Metal)
D2093 Practice for Preparation of Surfaces of Plastics Prior
6. Interference
to Adhesive Bonding
D3163 Test Method for Determining Strength ofAdhesively 6.1 Apparent shear strength may be affected by substrate
properties, such as moisture absorption and strength.
7. Apparatus
1
This test method is under the jurisdiction of ASTM Committee D14 on
AdhesivesandisthedirectresponsibilityofSubcommitteeD14.40onAdhesivesfor
7.1 Testing Machine, conforming to the requirements and
Plastics
having the capabilities of the machine in Practices E4 with
Current edition approved April 1, 2008. Published April 2008. Originally
self-aligning grips capable of securely grasping the specimen
approved in 1995. Last previous edition approved in 2001 as D5868 - 01. DOI:
throughout the test without allowing the specimen to slip.
10.1520/D5868-01R08.
2
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
3
Standards volume information, refer to the standard’s Document Summary page on Available from Society of Automotive Engineers (SAE), 400 Commonwealth
the ASTM website. Dr., Warrendale, PA 15096-0001, http://www.sae.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D5868 − 01 (2008)
8. Procedure
8.1 Test Substrate:
8.1.1 Substrates—Fiber reinforced plastic (FRP) as speci-
fied, with metal composition (heat treat, temper, and condition)
and roughness as specified when bonding FRP to metal.
8.1.2 Dimensions—Cut fiber-reinforced plastic parts into
flatcoupons1by4in.(25.4by100mm)atanominalthickness
of 0.1 in. (2.5 mm). In the case of FRP-to-metal bonding, use
metal with a nominal thickness of 0.06 in. (1.5 mm). It is
FIG. 1 Lap Shear O
...
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.
Designation:D5868–95 Designation: D 5868 – 01 (Reapproved 2008)
Standard Test Method for
Lap Shear Adhesion for Fiber Reinforced Plastic (FRP)
1
Bonding
This standard is issued under the fixed designation D 5868; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This test method describes a lap shear test for use in measuring the bonding characteristics of adhesives for joining fiber
reinforced plastics to themselves and to metals. The method is applicable to random and fiber oriented FRP.
1.2 This test method is intended to complement Test Method D 1002and extend the application to single-lap shear adhesive
joints of fiber-reinforced plastic (FRP) adherends. This test method is useful for generating comparative apparent shear strength
data for joints made from a number of FRP materials, providing a means by which FRP surface treatments may be compared.
1.3The values stated in inch-pound units are to be regarded as the standard. The SI values in parentheses are for information
only.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D1002Test Method forApparent Shear Strength of Single-Lap-JointAdhesively Bonded Metal Specimens by Tension Loading
(Metal-to-Metal) 907 Terminology of Adhesives
2
D2093Practice for Preparation of Surfaces of Plastics Prior to Adhesive Bonding 1002 Test Method for Apparent Shear
Strength of Single-Lap-Joint Adhesively Bonded Metal Specimens by Tension Loading (Metal-to-Metal)
D3163Test Method for Determining the Strength of Adhesively Bonded Rigid Plastic Lap-Shear Joints in Shear by Tension
2
Loading 2093 Practice for Preparation of Surfaces of Plastics Prior to Adhesive Bonding
2
D4896Guide for Use of Adhesive-Bonded Single Lap-Joint Specimen Test Results 3163 Test Method for Determining
Strength of Adhesively Bonded Rigid Plastic Lap-Shear Joints in Shear by Tension Loading
2
D907Terminology of Adhesives 4896 Guide for Use of Adhesive-Bonded Single Lap-Joint Specimen Test Results
D 5573 Practice for Classifying Failure Modes in Fiber-Reinforced-Plastic (FRP) Joints
E 4 Practices for Force Verification of Testing Machines
2.2 SAE Standard:
3
SAE J1525 Lap Shear Test for Automotive-Type Adhesives for Fiber Reinforced Plastic (FRP) Bonding
3. Terminology
3.1 Adhesive terminology for this test method is covered in Terminology D 907.
4. Summary of Test Method
4.1 This test method describes a procedure for the testing of lap shear bond strengths, using composite materials not
recommended in Test Method D 3163such as FRP.
1
This test method is under the jurisdiction of ASTM Committee D-14 and is the direct responsibility of Subcommittee D14.40 on Adhesives for Plastics.
Current edition approved Dec. 10, 1995. Published February 1996.
1
This test method is under the jurisdiction of ASTM Committee D14 on Adhesives and is the direct responsibility of Subcommittee D14.40 on Adhesives for Plastics
Current edition approved April 1, 2008. Published April 2008. Originally approved in 1995. Last previous edition approved in 2001 as D 5868 - 01.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book ofASTM Standards
, Vol 15.06.volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Annual Book of ASTM Standards, Vol 03.01.
3
Available from Society of Automotive Engineers (SAE), 400 Commonwealth Dr., Warrendale, PA 15096-0001, http://www.sae.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D 5868 – 01 (2008)
5. Significance and Use
5.1 Due to the increased use of adhesively-bonded FRP as a result of the inherent advantages afforded by bonded rather than
mechanically-fas
...
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