Experimental assessment of sound velocity and bulk modulus in high damping rubber bearings under compressive loading

Experimental assessment of sound velocity and bulk modulus in high damping rubber bearings under compressive loading

The present paper deals with the non-destructive evaluation of stressed High Damping Rubber Bearings (HDRB) in civil engineering. Such bearings are commonly made with alternating thin horizontal layers of High Damping Rubber (HDR) bonded to steel laminates. The influence of uniaxial compressive load...

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Bibliographic Details
Published in:Polymer testing Vol. 65; pp. 331 - 338
Main Authors: Tinard, Violaine, Brinster, Michel, Francois, Pierre, Fond, Christophe
Format: Journal Article
Language:English
Published: Barking Elsevier Ltd 01-02-2018
Elsevier BV
Subjects:
Acoustic velocity
Bearings
Bulk modulus
Compressive stress
Damping
Destructive testing
Elastic waves
Elastomer
Elastomers
Laminates
Measurement methods
Nondestructive testing
Rubber
Thin films
Ultrasonic testing
Ultrasonic velocity
Ultrasonic velocity
Compressive stress
Elastomer
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Summary:The present paper deals with the non-destructive evaluation of stressed High Damping Rubber Bearings (HDRB) in civil engineering. Such bearings are commonly made with alternating thin horizontal layers of High Damping Rubber (HDR) bonded to steel laminates. The influence of uniaxial compressive loading on pressure waves' velocity and bulk modulus is investigated for two types of bearings (with and without laminates). In the presence of laminates, bulk modulus increases with the applied compressive loading (e.g. ΔK = 20% at a mean stress σ = 16 MPa). In the absence of laminates, slipping on walls is visually observed in spite of their roughness and is thus confirmed by limitation in the increase of sound velocity. The feasibility of stress measurements using ultrasonic methods in HDRB is proved. •The influence of compression on elastic moduli for rubber material is assessed.•A dedicated experimental device was developed.•Experiments were performed for two types of high damping rubber bearings.•Pressure field in bearings under compressive load is numerically computed.•The feasibility of stress measurements using ultrasonic methods in rubber is proved.
ISSN:0142-9418
1873-2348
DOI:10.1016/j.polymertesting.2017.12.010