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타이틀	Some Examples of the Relations Between Processing and Damage Tolerance
저자	Nettles, Alan T.
Keyword	COMPRESSIVE STRENGTH;; DEFECTS;; IMPACT DAMAGE;; LAMINATES;; LOADS (FORCES); POLYMER MATRIX COMPOSITES;; TOLERANCES (MECHANICS)
URL	http://hdl.handle.net/2060/20130000533
보고서번호	M12-2131
발행년도	2012
출처	NTRS (NASA Technical Report Server)
ABSTRACT	Most structures made of laminated polymer matrix composites (PMCs) must be designed to some damage tolerance requirement that includes foreign object impact damage. Thus from the beginning of a part s life, impact damage is assumed to exist in the material and the part is designed to carry the required load with the prescribed impact damage present. By doing this, some processing defects may automatically be accounted for in the reduced design allowable due to these impacts. This paper will present examples of how a given level of impact damage and certain processing defects affect the compression strength of a laminate that contains both. Knowledge of the impact damage tolerance requirements, before processing begins, can broaden material options and processing techniques since the structure is not being designed to pristine properties.