Show welded joints some experiments mado lately at the laboratory of the university of michigan tha strength of welded joints are of sufficient practical value to to noted the report shows that of a number of specimens tested not one broke in the weld As however some of these were slightly larger at the weld another set of specimens was pro pared and a cut taken from each in the lathe in order to reduce the piece to a uniform diameter throughout its length between the jaws of the testing machine and common round iron was used tan der this arrangement three bars of metal were taken at random dimensions 1 inches long and three fourths of an inch in diameter from each bar four specimens being prepared one solid one lap welded one butt welded and one split welded the result was that only two specimens both lap welded broko at or near the weld the fracture being in one case slightly crystalline and the other tho strength in no case differing much from that of tho solid i parts |