A series of experiments have been performed to determine the mechanisms of failure in compressively loaded laminated plates in the presence of stress gradients generated by a circular cutout. Real time holographic interferometry and in situ photomicrography of the hole surface along with strain gauge measurements are used to study the progression of failure. The test specimens are multilayered ...

Abstract Composite materials are widely used in aerospace industries due to their light weight, strength, and various other desired properties. However, they susceptible defects occurring during the manufacturing process or service. Typical include porosity, wrinkles, delamination. Nondestructive means of detection at any stage great importance ensure quality safety composite structures. A noni...

*DcparllllL'nt Ill" MechanICal and Aerospace Engineering. **Ocp;,Jftment of Civil Engineering. EVER 1. BARBERO,* ROBERTO LOPEZ-ANIDO** AND JULIO F. DAVALOS** Ui'st Virginia University Morgantown, WV 26506-6101 On the Mechanics of Thin-Walled Laminated Composite Beams sible to optinlize the material itself by choosing among a variety of resins, fiber systems, and fiber orientations. Changes in t...