- Author
-
Watanabe, H.
|
Masters, L. W.
|
Seiler, J. F., Jr.
- Title
- Quality Assurance Tests for Adhesion of Paint on Tactical Rigid Wall Shelters.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
Takenaka Corp., Tokyo, Japan
- Sponsor
- Army Natick Research Development and Engineering Center, MA
- Report
-
NISTIR 90-4276,
April 1990,
46 p.
- Distribution
- Available from National Technical Information Service
- Keywords
-
adhesion
|
adhesion tests
|
bond strength
|
paints
|
tactical rigid wall shelters
|
test methods
- Abstract
- This document was prepared at the request of the U. S. Army Natick Research, Development and Engineering Center to provide assistance in identifying or developing a better method(s) for assuring the adequency of paint adhesion on aluminum-faced sandwich panels of portable rigid wall shelters. The preferred requirements developed for the quality assurance tests are that the tests be quantitative, reliable, suitable for in-situ testing, low cost, and non-destructive. Currently available methods were surveyed. Both destructive and non-destructive techniques were examined. Among them, a button pull-off test was found to be most advantageous. Preliminary laboratory experiments using a button pull-off test to measure the bond strength of painted specimens provided by a shelter manufacturer showed the average bond strength of the exterior and the interior paints to be 7.27 Mpa (1050 psi) and 9.29 Mpa (1350 psi), respectively. Other experiments examined the feasibility of a semi-nondestructive button pull-off techniques, which, by using certain materials to reduce the adhesive/paint bond strength, was capable of testing a paint without damaging it. Two of the three "bond controllers" tested were found to be effective. The recommendations for future research include: 1) establishing a technical basis for a minimum acceptable bond strength of paint; 2) developing and standardizing a improved button pull-off test; and 3) carrying out a feasibility study on non-destructive methods.