Designation: D – 93 (Reapproved ) Standard Test Method for Resistance of Organic Coatings to the Effects of Rapid Deformation. Buy ASTM D() Standard Test Method for Resistance of Organic Coatings to the Effects of Rapid Deformation (Impact) from SAI Global. Purchase your copy of ASTM D – 93() as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards.
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Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. The organic coatings under test d27994-93 applied to four or more suitable thin metal panels. Once visible cracks are observed, repeat the test?
Medical Product Testing Instruments. Food and Beverages Testing Equipments. Other gage steel panels may be used if agreed upon between the producer and the user.
Test in a random fashion so that all impacts from one height are not made in succession or on one panel. NOTE 4—Because d2794-993 the poor reproducibility of this method, the reporting of inch-pounds kilogram-metres in comparing coatings for impact resistance should be restricted to one laboratory.
This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Interlaboratory agreement is improved when ranking is used in place of numerical values.
Air Permeability Testing Instruments. Stretch Blown Testing Equipments. The base is constructed so that a thin? Raise the weight up the tube to a height where it is expected that no failure will occur. Moisten the probe sponge with tap water and slowly draw the probe over the impact area. Pulp and Sheet F2794-93 Testing Instruments.
A superscript epsilon e indicates an editorial change since the last revision or reapproval. An impact test which is useful for testing paint and coating adhesion is ASTM D, the drop test performed on a universal impact tester see top photo.
Universal Impact Testing – ASTM D2794
Wood and Laminates Testing Instruments. In its use over many years, this test method for impact resistance has been found to be useful in predicting the performance of organic coatings for their ability to resist cracking caused by impacts. Be sure the panel is?
Touchstone Research Laboratory, Ltd. Historical Version s – view previous versions of standard Translated Version s: ASTM D provides a procedure for rapidly deforming by impact a coating film and its substrate and for evaluating the effect of such a deformation.
Composites Material Testing Equipments.
Once visible cracks have been identified, the test is repeated five times at that level, as well as five times above and below that level. The value where the results change from mainly passing to mainly failing is the impact failure end point.
ASTM D2794 – 93(2010)
A number in parentheses indicates the year of last reapproval. Paper and Tissue Testing Instruments. Pipes Industry Testing Equipments. Conduct the test in the same environment or immediately on removal therefrom. Select from list below: Graduations are marked in inch-pounds along the slot.
The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.
Of course, these confirmation tests are conducted in a random order so successive tests are not satm at the same height or on the same panel. Plastic Rope Testing Equipments. By gradually increasing the distance the weight drops, generally 1 inch 25 mm at a time, the point at d2794-3 failure usually occurs can be determined.
If no cracks are evident, repeat the procedure at a greater height, increasing 1 in.
Thickness Measurement Testing Aatm. Lightly place the weight on the indenter and adjust the guide tube so that the lifting pin is at the zero mark.
Useful for checking resistance to impact surface damage and penetration for construction materials viz plastic,