by National Aeronautics and Space Administration, Langley Researach Center in Hampton, Va .
Written in English
|Statement||Steve J. Lubowinski ... [et al.].|
|Series||NASA technical memorandum -- 100634., AVSCOM technical memorandum -- 88-B-012., AVSCOM technical memorandum -- 88-B-12.|
|Contributions||Lubowinski, Steve J., Langley Research Center.|
|The Physical Object|
6Lubowinski, Steve, "Open-Hole and Laminate Compression Study," presentation at the ASTM Committee D30 Compression Testing Study Group (San Antonio, Texas), Nov. 14, 7 ASTM Standard D , "Open-Hole Compressive Strength of Polymer Matrix Composite Laminates," American Society for Testing and Materials (W. Conshohocken, Pa.), March. Failure prediction technique for compression loaded carbon fibre–epoxy laminates with an open hole. J Comp Mat ;25(5)–] is applied to estimate compression-after-impact (CAI) strength. Open hole tension and compression behavior of 3D braided composites of stress concentrations in composites. This book is the first to address the problem of laminated composites containing. [Show full abstract] by an open hole compression test. The experimental results confirm that hybrid composites containing basalt fibers display 46% higher open hole compression strength than that.
Comparison of Open-Hole Compression Strength and Compression After Impact Strength on Carbon Fiber/Epoxy Laminates for the Ares I Composite Interstage Notched (open hole) composite laminates were tested in compression. The effect on strength of various sizes of through holes was examined. Results were compared to the average stress criterion model. FAILURE ANALYSIS OF COMPOSITE LAMINATES WITH AN OPEN HOLE UNDER BI-AXIAL COMPRESSION-TENSION LOADING mm square test section and a 6 mm hole diameter in a servo-hydraulic test machine. The damage initiation at the edge of the hole was observed by using penetrant-enhanced X-ray radiography. All specimens failed from the hole. Modelling failure of composite specimens with defects under compression loading. Composites A ()  Adams, D. (). Testing Tech: The Modified D Compression Test Method. The design of composite structures frequently includes discontinuities such as cut-outs and holes for joints, and they become critical regions under tensile or compressive loading. Failure in compression of fiber composite laminates with an open hole is by the initiation and growth of a microbuckle from the edge of the hole.
In particular, some progressive damage models have been employed to study the open-hole composite laminates under compression. Chang et al.  developed a two-dimensional progressive damage model to predict damage accumulation and the strengths of open-hole composite laminates by integrating failure criteria of Yamada-Sun and Hashin . The open hole strength of a composite material is a critical design parameter. However, the The open hole compression (OHC) strength was then derived for D/W ratios of 1/4, 5/16 and 1/2. All tests were run at a constant displacement rate of cm / min. Figure 3 gives a. "Loading Rate Sensitivity of Open-Hole Composite Specimens in Compression," Composite Materials: Testing and Design, S. P. Gargbo, ed., Philadelphia: American Society for Testing and Materials, pp. Google Scholar | Crossref. "The Wyoming Combined Loading Compression (CLC) Test Method," Journal of Composites Technology & Research, Vol. 19, No. 3, July , pp. 8 ASTM Standard D , "Determining the Compressive Properties of Polymer Matrix Composite Laminates Using A combined Loading Compression (CLC) Test Fixture," ASTM International, W. Conshohocken.