Photoelastic coating technique is used to determine stresses around hole for finite composite laminates loaded by a steel pin. Effects of variations in laminate geometry and ratio of pin-to-hole diameter are investigated for the case of clearance fit. The changes of stresses with load increase are also observed.
Experimental results show that stresses are more sensitive to the edge distance than to the width of the laminate and increase of clearance makes stresses concentrated on the front region of the laminate. Also, it is shown that the shear stress along shear-out plane rapidly increases with the increase of applied load.
