Investigation on Vibration Response of Aluminum Foam Beams Using Speckle Interferometry

Journal Article · Thu Feb 15 04:00:00 EST 2018 · Experimental Techniques

DOI:https://doi.org/10.1007/S40799-017-0222-1· OSTI ID:22771479

Ma, Y. H.; Tao, N.; Dai, M. L.; He, X. Y. ^[1]

---

1. Southeast University, Jiangsu Key Laboratory of Engineering Mechanics (China)

This paper firstly presents a brief review on the representations of speckle fringe pattern in vibration measurement using time-averaged electronic speckle pattern interference (ESPI) method. Based on laser phase noise, a new representation of speckle fringe intensity generated by real-time subtraction ESPI method for vibrating measurement is then proposed. In the experimental performance, the real-time subtraction ESPI method is employed to inspect the vibrating response of a closed-cell aluminum foam cantilever beam. In contract with the results of the finite elemental method simulation, the vibration mode shapes obtained by the ESPI method are well agreed with numerical prediction. The optical vibration analysis is also carried out to determine the effective Young’s modulus of aluminum foam, and the results verify the validation of the ESPI method for investigation on mechanical properties of metal foam materials.

• OSTI ID: 22771479
• Journal Information: Experimental Techniques, Journal Name: Experimental Techniques Journal Issue: 1 Vol. 42; ISSN 0732-8818; ISSN EXPTD2
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM
FOAMS
INTERFERENCE
INTERFEROMETRY
LASERS
MECHANICAL PROPERTIES
OSCILLATION MODES
PERFORMANCE
REVIEWS
SIMULATION
VALIDATION