ASTM D2099-00
(Test Method)Standard Test Method for Dynamic Water Resistance of Shoe Upper Leather by the Maeser Water Penetration Tester
Standard Test Method for Dynamic Water Resistance of Shoe Upper Leather by the Maeser Water Penetration Tester
SCOPE
1.1 This test method covers the determination of the dynamic water resistance of shoe upper leather by the Maeser water penetration tester. It is applicable to all types of shoe upper leather. Certain waterproof processes can cause contamination of the stainless steel balls. When this happens, visual inspection is recommended. This test method does not apply to wet blue.
1.2 Initial water penetration and water absorption can be measured by this test method.
1.3 This standard does not purport to address all of the safety problems 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:D2099–00
Standard Test Method for
Dynamic Water Resistance of Shoe Upper Leather by the
Maeser Water Penetration Tester
This standard is issued under the fixed designation D 2099; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 4.2 Maeser Water Penetration Tester, as shown in Fig. 1,
or its equivalent. The essential features of the machine are:
1.1 This test method covers the determination of the dy-
4.2.1 Specimen Holder, made of two V-shaped clamps with
namic water resistance of shoe upper leather by the Maeser
wedges for holding the specimen. The clamps shall be 2.5 6
water penetration tester. It is applicable to all types of shoe
0.1 in. (635 6 2.5 mm) apart, inside measurement, when their
upper leather. Certain waterproof processes can cause contami-
tops are in the same horizontal plane. One clamp shall be in a
nation of the stainless steel balls. When this happens, visual
fixed position. The other clamp shall be pivoted as shown in
inspection is recommended.This test method does not apply to
Fig. 1 and attached, through a connecting link, to a motor-
wet blue.
driven eccentric which turns at 90 6 5 r/min. In one rotation of
1.2 Initial water penetration and water absorption can be
the eccentric, the center of the top of the movable clamp shall
measured by this test method.
move a distance of 1 6 0.05 in. (25.4 6 1.3 mm) below the
1.3 This standard does not purport to address all of the
horizontal and return.
safety concerns, if any, associated with its use. It is the
4.2.2 Water Tank, made of copper, stainless steel, or other
responsibility of the user of this standard to establish appro-
noncorrosive material. It shall be of such a size that it can be
priate safety and health practices and determine the applica-
placed around the clamps and of such a depth that, when in
bility of regulatory limitations prior to use.
position for use, the top is 1.25 to 1.5 in. (31.7 to 38.1 mm)
2. Referenced Documents
above the lowest point of the flexed clamp.
4.3 Base for the Water Tank, which is removable from
2.1 ASTM Standards:
between the machine frame and the water tank.
D 2098 Test Method for DynamicWater Resistance of Shoe
4.4 Two systems can be used to determine the number of
Upper Leather by the Dow Corning Leather Tester
cycles through which the specimen is flexed. One shall be a
3. Significance and Use
mechanical reset counter connected to the movable clamp.The
other system shall be electrical and consist of a high and
3.1 This test method is intended to estimate the water
common electrode. The recommended resistance across the
resistance of shoe upper leather. The flex imparted to the
common electrodes is 50 000 V. When the resistance falls
leather is similar to the flex given the vamp of the shoe in
below this value, the relay will be energized. The high
actual wear.
electrode shown is inside the leather specimen in contact with
NOTE 1—There is an indication that this test method cannot be used
the steel balls. The common electrode is in a salt solution
interchangeably for specification purposes with Test Method D 2098.
which is in continuous contact with the specimen during
flexing.
4. Apparatus
4.5 Initial water penetration is detected by a current leakage
4.1 Balance, sensitive to 0.01 g.
from the high electrode through the specimen to the common
This test method is under the jurisdiction ofASTM Committee D31 on Leather
The sole source of supply of the apparatus know to the committee at this time
and is the direct responsibility of Subcommittee D31.03 on Footwear.
is Koehler Instrument Co., Inc., 1595 Sycamore Ave., Bohemia, NY 11716. If you
Current edition approved Sept. 10, 2000. Published October 2000. Originally
are aware of alternative suppliers, please provide this information to ASTM
published as D 2099–62T. Last previous edition D 2099–99.
Headquarters.Your comments will receive careful consideration at a meeting of the
Annual Book of ASTM Standards, Vol 15.04.
responsible technical committee, which you may attend.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D2099–00
FIG. 1 Maeser Water Penetration Tester
FIG. 1 Maeser Water Penetration Tester (continued)
electrode in the conducting solution. This causes a thyatron 5.2 Magnetic Balls, stainless steel, ⁄8 in. (3 mm optional) in
tube to fire, opening the relay and stopping the machine. diameter, 400 series. The steel balls shall be clean and free of
grease, oil, silicone, or rust, and have a resistance less than
5. Reagents and Materials
7500 V before using. Steel balls need to be cleaned after each
5.1 Magnet, to facilitate removal of stainless steel balls. use.
D2099–00
5.2.1 To clean, immerse stainless steel balls in mild acid, of the specimen adjacent to the fixed clamp. Attach the other
5 % Nitric. Rinse them in water, and allow to air dry. electrode to the pan, set the mechanical counter to zero, and
5.3 Sodium Chloride Solution (1 g/L)—Dissolve1gof activate the electrode circuit. It is not necessary to activate the
sodium chloride (NaCl) in distilled water and dilute to 1 L. electrode circuit if visual end point detection is desirable.
Solution shall be changed after each test. 7.1.4 Turn on power to the mechanical drive.
7.1.5 To determine initial water penetration, record the
6. T
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