Strain measurements in and on boron-epoxy test coupons

This paper is based on an Air Force Flight Dynamics Laboratories-sponsored program to evaluate strain gages embedded in boron-epoxy test coupons. The strain gages, embedding techniques and specimen configurations used were relatively uncomplicated. The results of the program showed that the embedded-gage performance was comparable to surface-mounted-gage performance and are intended to provide a basis for more complex applications such as in joints, near holes and in sandwiched metal/fibrous composites.