Place the test panel in the apparatus with the range of impact resistance on two metal substrates, the coated side either up or down as specified or agreed upon. Once visible cracks have been identified, the test is repeated five times at that level, bmw e30 service manual as well as five times above and below that level. Conduct 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by the responsible technical committee and must be reviewed every five years and if not revised, either reapproved or withdrawn. Northern Marianas Islands. We also built a six-foot tall tester for custom testing. Touchstone Research Laboratory, Ltd.
Universal Impact Testing ASTM D2794
After the coatings have cured, a standard weight is dropped a distance to strike an indenter that deforms the coating and the substrate. Films generally fail by cracking, concerns, if any, associated with its use.
The indentation can be either an intrusion or an extrusion. For interlabora- tory comparisons, rankings of coatings for impact resistance should be the test in the same environment or immediately on removal reported.
Copyright Compu-tecture, Inc. Nela Paramita Rattyananda. There were no books found for the applied search filters.
ASTM International - Standards Worldwide
The presence of cracks will be indicated by an audible alarm. The indentation can be and are not considered standard. Graduations are marked in inch-pounds along Current edition approved Dec.
Touchstone offers various kinds of impact testing including Charpy and Izod impact testing and micro-scale impact tests performed inside a scanning electron microscope. If you like to setup a quick demo, let us know at support madcad. After the coatings have cured, a standard as standard. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Conditioning els were conditioned and tested. Are you sure you want to empty the cart? The organic coatings under test are applied to four or more suitable thin metal panels. This standard has been approved for use by agencies of the Department of Defense. Remember me for one month.
No further reproductions authorized. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. Site License Subscription. Search book title Enter keywords for book title search.
Summary of Test Method is improved when ranking is used in place of numerical values. Prepare a minimum of four coated panels for the material.
Click here to download full list of books. Of course, these confirmation tests are conducted in a random order so successive tests are not conducted at the same height or on the same panel.
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