VIBRATION-BASED METHOD FOR DAMAGE DETECTION AT WELDED BEAMS AND RODS

Authors

  • PABLO N GARCÍA-FOGEDA POLITéCNICA UNIVERSITY OF MADRID
  • PABLO N LÓPEZ POLITECNICA UNIVERSITY OF MADRID
  • PABLO S. SALGADO POLITéCNICA UNIVERSITY OF MADRID

Keywords:

VIBRATIONS, WELDING, DAMAGE DETECTION

Abstract

IN THIS WORK, A VIBRATION-BASED METHOD FOR DAMAGE DETECTION AT WELD-ED BEAMS AND RODS IS PRESENTED. THE MODEL OF THE STRUCTURAL ELEMENT INCLUDES THE EFFECT OF THE ADDED INERTIA DUE TO THE WELDING PROCESS. TWO METHODS OF SOLUTION ARE PRESENTED ANALYTICALLY AND BY MEANS OF THE FINITE ELEMENT METHOD (FEM). FROM THE RESULTS OBTAINED IT CAN BE ASSEVERATED THAT THE METHOD CAN BE A USEFUL TOOL TO DETECT DEGRADATION OF WELDED STRUCTURES. IN CONTRAST TO OTHER EXISTING METHODS FOR CRACKS DETECTION, IT IS SHOWN THAT SEVERAL FREQUENCIES HAVE TO BE TAKEN INTO CONSIDERATION TO DETERMINE THE WEAR CHARACTERISTICS OF THE WELDED ELEMENTS, SINCE DEPENDING ON THE LOCATION OF WELDING, SOME FREQUEN-CIES CAN BE VERY LITTLE SENSITIVE TO THE REDUCTION OF RIGIDITY AT THE WELD-ED SECTION. THE RESULTS PRESENTED SHOW SIMILAR TENDENCY TO THOSE OB-TAINED BY OTHER INVESTIGATIONS FOR CRACKS DETECTION WHEN ADDED INERTIA WAS NOT INCLUDED

Author Biographies

PABLO N LÓPEZ, POLITECNICA UNIVERSITY OF MADRID

GRADUATE STUDENT, ETSIAE

PABLO S. SALGADO, POLITéCNICA UNIVERSITY OF MADRID

GRADUATE STUDENT, ETSIAE

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Published

2016-08-26

Issue

Vol. 13 No. 13 (2016)

Section

Articles

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