SEDL / STP / STP787-EB / STP28480S

Initiation and Accumulation of Damage in Composite Laminates

Sandhu, RS
Aerospace Engineer, Air Force Wright Aeronautical Laboratories/FIBC, Wright-Patterson Air Force Base, Ohio

Gallo, RL
General Dynamics Corporation, Fort Worth, Tex.

Sendeckyj, GP
Aerospace Engineer, Air Force Wright Aeronautical Laboratories/FIBE, Wright-Patterson Air Force Base, Ohio

Pages: 20    Published: Jan 1982

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Abstract

A progressive-ply-failure finite element program for predicting damage initiation and progression in composite structures with stress concentrators is described. The program was used to predict the damage accumulation process in double-edge notched graphite-epoxy specimens subjected to tensile loading. The predictions were found to be in good agreement with experimental data.