The Use of Preformed Holes for Increased Strength and Damage Tolerance of Advanced Composites
| Autor: | Stephen L. Gunderson, James A. Lute |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
Materials science
Polymers and Plastics Mechanical Engineering Forming processes 02 engineering and technology Composite laminates 021001 nanoscience & nanotechnology 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials Ultimate tensile strength Advanced composite materials Materials Chemistry Ceramics and Composites Fiber Composite material 0210 nano-technology Punching Damage tolerance Stress concentration |
| Zdroj: | Journal of Reinforced Plastics and Composites. 12:559-569 |
| ISSN: | 1530-7964 0731-6844 |
| DOI: | 10.1177/073168449301200506 |
| Popis: | Holes in composites are a necessity for joining and fastening parts together; however, they also create large stress concentrations that often initiate failure. The cause of these stress concentrations originate at the broken fiber ends around the hole perimeter that are produced by the hole forming process (drilling or punching). This article presents an innovative hole design that was inspired by biomimetics research for reducing stress concentrations. The current study compares experimentally the effects of drilled vs. preformed holes on the ultimate strength and damage tolerance of advanced composite laminates. Preformed holes were produced by laying up 3501-6/AS4 unidirectional tape onto a caul plate containing 1/4″ diameter circular pins which remained in place throughout the cure process |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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