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Record Details

Record 18 of 2506
Mixed-Mode-Bending Delamination Apparatus
Author and Affiliation:
Crews, John H., Jr.(NASA Langley Research Center, Hampton, VA.)
Reeder, James R.(NASA Langley Research Center, Hampton, VA.)
Abstract: Mixed-mode-bending delamination apparatus generates two types of delamination stress simultaneously in specimen from single externally applied point load. In technique, indivial mode I and mode II contributions to delamination in specimen analyzed by use of simple beam-theory equations, eliminating need for time-consuming, difficult numerical analysis. Allows wider range of mode I/mode II ratios than possible with many other methods. Mixed-mode delamination testing of interest in all fields utilizing composite materials, used mostly in aerospace field, but also used in automobiles, lightweight armored military vehicles, boats, and sporting equipment. Useful in general lumber, plywood, and adhesive industries, as well.
Publication Date: Aug 01, 1991
Document ID:
19910000398
(Acquired Nov 04, 1995)
Accession Number: 91B10398
Subject Category: MECHANICS
Report/Patent Number: LAR-13985
Document Type: NASA Tech Brief
Publication Information: NASA Tech Briefs (ISSN 0145-319X); 15; 8; P. 73; (SEE N89-10945/TB)
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: NASA Langley Research Center; Hampton, VA, United States
Description: In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: BENDING; COMPOSITE MATERIALS; DELAMINATING
Availability Source: National Technology Transfer Center (NTTC), Wheeling, WV
Availability Notes: Additional information available through: National Technology Transfer Center (NTTC), Wheeling, WV 26003, (Tel: 1-800-678-6882).
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