Designation: D – 02 Standard Test Methods for Measuring Adhesion by Tape Test1 This standard is issued under the?xed designation D. ASTM D Uploaded by. Leonardo Gonçalves. Loading Preview. Sorry, preview is currently unavailable. You can download the paper by clicking the. ASTM D Pull Off Test Standard. Uploaded by. vlong ASTM D MEK Test (Zinc Test). Uploaded by. vlong ASTM D Eng Cross-cut.
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Procedure for X-CUT TAPE TEST METHOD-ASTM D3359-02
As Mittal 1 12 has pointed out, zstm answer is both yes and no. Dhave advised this subcommittee that the properties of these tapes were changed. Current edition approved Aug. Remove an additional length at a steady that is, not jerked rate and cut a piece about 75 mm 3 in. Extremes in temperature or relative humidity may affect the adhesion of the tape or the coating. Originally published as D — For coatings on soft substrates, issues include how deep should this cut penetrate, and is it possible to cut only to the interface?
The central issues are that the test on plastics lacks reproducibility and does not relate to the intended application. NOTE 5—If desired or speci? Thus both tensile and compressive forces are involved in adhesion tape testing. Remove an additional length at a steady that is, not jerked rate x cut a piece about 75 mm 3 in.
In its simplest version a piece of adhesive tape is pressed against the paint?
Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. For large structures make sufficient tests to ensure that the adhesion evaluation is representative of the whole surface. Summary of Test Methods 3.
Some commercial tapes adtm manufactured to meet minimum standards. The color under the tape is a useful indication of when good contact has been made. Several factors that contribute to these differences include coating composition and topology: Although some rather brittle coatings may exhibit cohesive failure, the tape test adhesion method does not make provision for giving failure locality 7, 8.
Your comments will receive careful consideration at a meeting of the responsible technical committee,1 which you may attend. Because of the variability in adhesion strength from batch-to-batch and with time, it is essential that tape from the same batch be used when tests are to be run in different laboratories.
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. The values given in parentheses are for information only. The limited scale of 0 to 5 was selected deliberately to avoid a false impression of being sensitive.
Also, because tapes change on storage, bond strengths of the tape may change over time 7, 8. Both test methods are used to establish whether the adhesion of a coating to a substrate is at an adequate level; however they do not distinguish between higher levels of adhesion for which more sophisticated methods of measurement are required.
Precision and Bias 8 9. This standard has been approved for use by agencies of the Department of Defense.
It is not unexpected that different operators might obtain different results 7, 8. The color under the transparent tape is a useful indication of when good contact has been made.
Because the substrate and its surface preparation or lack of it have a drastic effect on the adhesion of coatings, a method to evaluate adhesion of a coating to different substrates or surface treatments, or of different coatings to the 2 3 1. The color under the transparent tape is a useful indication of when good contact has been made.
ASTM D – 02 Standard Test Methods for Measuring Adhesion by Tape Test
Criteria deemed essential for a test to warrant large-scale acceptance are: Major limitations of the tape test are its low sensitivity, 3359-02 only to coatings of relatively low bond strengths, and non-determination of adhesion to the substrate where failure occurs within a single coat, as when testing primers alone, or within or between coats in multicoat systems.
If this is not possible the test method aastm be used only for ranking a series of test coatings. Direct tests include the Hesiometer and the Adherometer 2. It is reasonable to state that at the present time no test exists that can precisely assess the actual physical strength of an adhesive bond.
The intra- and inter-laboratory precision of this test method is similar to other widely-accepted tests for coated substrates for example, Test Method D asrm Test Method Dbut this is partly the result of it being insensitive to all but large differences in adhesion.
Procedure for A-X-CUT TAPE TEST METHOD-ASTM D
After immersion, clean and wipe the surface with an appropriate solvent which will not harm the integrity of the coating. However, with the tape test, failures within the substrate or coating layers are rare because the tape adhesive is not usually strong enough to exceed the cohesive strengths of normal substrates and organic coatings.
NOTE 4—Coatings should be applied in accordance with Practice Dor as agreed upon between the purchaser and the seller. More importantly, in this instance the test is being applied beyond its intended scope.
If the substrate has not been reached make another X in a different location. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Further, the tape test does not give an absolute value for the force required for bond rupture, but serves only as an indicator that some minimum value for bond strength was met or exceeded 7, 8.