000020189 001__ 20189
000020189 005__ 20170118182359.0
000020189 04107 $$aeng
000020189 046__ $$k2017-01-09
000020189 100__ $$aKawasaki, Yuma
000020189 24500 $$aDamage Evaluation of Anti-Seismic Rubber Bearing Using Acoustic Emission

000020189 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000020189 260__ $$b
000020189 506__ $$arestricted
000020189 520__ $$2eng$$aTo mitigate earthquake damage to highway bridges, many laminated rubber bearings were installed in Japan following the 1995 Kobe Earthquake. Recently, deterioration of these rubber bearings, which affects the seismic performance of the bridges, has been reported. However, an accurate assessment of damage to rubber bearings (for early warning) is difficult because of a covering rubber that interferes checking inside. Acoustic emission (AE) method which is one of non-destructive inspections was conducted to evaluate internal damage of bearings. The AE activities and their parameters of the damaged bearings were compared with new bearings. The results showed that the internal damage of the rubber bearings could be estimated through the activities of the AE parameters and location analysis. However, laminate rubber bearing is one of the composite materials with rubber and steel plates. In order to detect the damage inside laminated rubber bearing is difficult because the elastic-wave propagation is complicated. This study conducted the damage assessment of the rubber materials using AE method. AE parameter analysis and damage location analysis were conducted. The results confirmed that the AE method could detect the propagation of elastic-wave inside rubber materials. Furthermore, the location analysis indicated the internal voids with accuracy. AE method was proved to be useful tool for on-site assessment of a laminated rubber bearing to mitigate damage of the bridge before an earthquake occurred.

000020189 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000020189 653__ $$aAcoustic emission, Location analysis, Rubber bearing

000020189 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000020189 720__ $$aKawasaki, Yuma$$iIzuno, Kazuyuki$$iTeramura, Naoto
000020189 8560_ $$ffischerc@itam.cas.cz
000020189 8564_ $$s471761$$uhttps://invenio.itam.cas.cz/record/20189/files/710.pdf$$yOriginal version of the author's contribution as presented on USB, paper 710.
000020189 962__ $$r16048
000020189 980__ $$aPAPER