Unclassified 



SECURITY CLASSIFICATION OF THIS PAGE(Whon Data Entt 



Library Card 



Naval Civil Engineering Laboratory 



TEST AND EVALUATION OF THE MAGNOGRAPH^'^ 

 UNIT - A NONDESTRUCTIVE WIRE ROPE TESTER, by 

 L. D. Underbakke and H. H. Haynes 

 TN-1639 85 pp illus July 1982 Unclassified 

 1. Nondestructive test 2. Steel cable I. Y0995-01-004'621 



The nondestructive wire rope test device, a unitized AC/DC Magnograph, was tested 

 for operational characteristics prior to acquisition by Naval field activities and start of 

 inspection programs. The Magnograph was tested for loss of metallic area (LMA) and local 

 fault (LF) detection accuracy. Wire ropes 1/2, 3/4, 1-1/8, 1-1/2, 2, and 2-1/2 inches in 

 diameter were tested on a wire rope test track to find the accuracy of the unit. Two mining 

 vAre ropes, guy wires of a 1,000-ft-tall tower, and wire rope for 400-, 250-, and 30-ton cranes 

 were used to determine operational characteristics of the Magnograph. 



Unclassified 



LASSiriCATION OF THIS I 



