Improvement of Accuracy and Reliability of Experimental Modal Analysis

Mitsuo IWAHARA; Taei SUGIURA; Akio NAGAMATSU

doi:10.1299/jsmec.42.140

JSME International Journal Series C Mechanical Systems, Machine Elements and Manufacturing

Online ISSN : 1347-538X
Print ISSN : 1344-7653
ISSN-L : 1344-7653

Improvement of Accuracy and Reliability of Experimental Modal Analysis

Mitsuo IWAHARA, Taei SUGIURA, Akio NAGAMATSU

著者情報

キーワード: Vibration Testing, Experimental Modal Analysis, Impact Hammer, Measurement Error, Modal Assurance Criteria

ジャーナルフリー

1999 年 42 巻 1 号 p. 140-146

DOI https://doi.org/10.1299/jsmec.42.140

詳細

抄録

An experimental for determining frequency response functions accurately is presented.Input noise is greatly reduced by using a new hammer impact apparatus with a fixed hammer pivot.With the new impact hammer apparatus and other methods, accidental errors have been reduced.Bias errors cannot be removed by statistical methods, the examples of which are mentioned here and improvements suggested.