In arder to evaluate the possibility of using cut bars in piace of cracked bars in a laboratory for diagnostic structure studies, an experiment using the local modal sensitivity method was carried out on two groups of bars with defects. The analysis revealed an errar of less than 2.5% for both types of defects in localising the defect, while the error in determining the depth of the defect could reach up to 25%. These results are in agreement with those obtained from other experiments. Since no significant differences were found between cracks and cuts, diagnostic analyses carried out in the laboratory to identify cracks could use cut bars in piace of cracked bars when flexural moda! analysis is considered.
Crack and cut detection in bars using the Local Modal Sensitivity Method
BASSO, ROBERTO;FANTI, GIULIO
2002
Abstract
In arder to evaluate the possibility of using cut bars in piace of cracked bars in a laboratory for diagnostic structure studies, an experiment using the local modal sensitivity method was carried out on two groups of bars with defects. The analysis revealed an errar of less than 2.5% for both types of defects in localising the defect, while the error in determining the depth of the defect could reach up to 25%. These results are in agreement with those obtained from other experiments. Since no significant differences were found between cracks and cuts, diagnostic analyses carried out in the laboratory to identify cracks could use cut bars in piace of cracked bars when flexural moda! analysis is considered.
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