An Investigation of the Fatigue and Creep Properties of Glass Reinforced Plastics for Primary Aircraft Structures
Author: K. E Hofer (Jr)
Publisher:
Published: 1967
Total Pages: 257
ISBN-13:
DOWNLOAD EBOOKFatigue of glass reinforced epoxy composite materials is examined from several points of view. High cycle and low cycle fatigue and the effects of frequency, moisture, and state of stress on the fatigue life are included. The effects of creep and strain rate are also studied with a view toward their effect on fatigue life. Cumulative fatigue damage studies include nondestructive ultrasonic techniques applied to damage levels and application of phenomological theory to the results of two stress level testing. Appendices accompanying the report include (1) a survey of GRP fatigue literature, and (2) a survey of existing cumulative fatigue damage theories with potential application to GRP. Two types of reinforcement were used, uniaxial roving and glass cloth. (Author).