Experimental investigation on frequency shifting of imperfect adhesively bonded pipe joints

International Conference on Advances in Manufacturing and Materials Engineering 2017

机械制造;材料科学

Haiyam, F.N.^1 ; Hilmy, I.^1 ; Sulaeman, E.^2 ; Firdaus, T.^1 ; Adesta, E.Y.T.^1

Department of Manufacturing and Materials Engineering, International Islamic University Malaysia (IIUM), Jalan Gombak, Kuala Lumpur

53100, Malaysia^1

Department of Mechanical Engineering, International Islamic University Malaysia (IIUM), Jalan Gombak, Kuala Lumpur

53100, Malaysia^2

关键词: Adhesively bonded;    Catastrophic failures;    Experimental investigations;    Frequency-shifting;    Manufactured structures;    Non destructive testing;    Product integrity;    Structural damages;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/290/1/012056/pdf
DOI  :  10.1088/1757-899X/290/1/012056

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Inspection tests for any manufactured structure are compulsory in order to detect the existence of damage.It is to ensure the product integrity, reliability and to avoid further catastrophic failure. In this research, modal analysis was utilized to detect structural damage as one of the Non Destructive Testing (NDT) methods. Comparing the vibration signal of a healthy structure with a non-healthy signal was performed. A modal analysis of an adhesively bonded pipe joint was investigated with a healthy joint as a reference. The damage joint was engineered by inserting a nylon fiber, which act as an impurity at adhesive region. The impact test using hammer was utilized in this research. Identification of shifting frequency of a free supported and clamped pipe joint was performed.It was found that shifting frequency occurred to the lower side by 5%.