System Analysis of a Lug by Moire Fringe Method
نویسندگان
چکیده
A set of experimental procedures, based upon the moire fringe method has been used for measuring elasto-plastic strains in a lug. Results of experiments conducted on aluminium specimens have been presented and discussed. It is found that moire fringe method gives reliable measurement of strain in lug. INTRODUCTION In aircraft, lug type joints are frequently used in connecting structural elements. The basic configuration of lug is a hole f i t ted w i th a pin as shown in Fig.1. The lug is normally connected by means of single bolt or pin, creating a simple joint that is easy t o assemble or disassemble. Since clamping of joint is normally not allowed, the lug can act as a pivot. In certain situations, lugs are critical components since consequences of their failure are severe. Fig. 1 : Typical Lug Configurations
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