Experimental investigation on the damage effect of steel structure by continuous laser under preloaded invariable stretching stress

Yang Zhu; Xisheng Ye; Xinwei Lin; Chenghua Wei; Lijun Wang; Deyan Cheng

doi:10.1117/12.2011257

16 May 2013 Experimental investigation on the damage effect of steel structure by continuous laser under preloaded invariable stretching stress

Yang Zhu, Xisheng Ye, Xinwei Lin, Chenghua Wei, Lijun Wang, Deyan Cheng

Author Affiliations +

Proceedings Volume 8796, 2nd International Symposium on Laser Interaction with Matter (LIMIS 2012); 87960P (2013) https://doi.org/10.1117/12.2011257
Event: 2nd International Symposium on Laser Interaction with Matter (LIMIS 2012), 2012, Xi'an, Shaanxi, China

Abstract

Based on the invariable stretching stress preloading device, the experimental investigation on damage effect of 30CrMnSiA steel structure specimen by continuous laser was carried out. While the stress is between 660MPa and 1140MPa, the average laser power density is between 110W/cm² and 330W/cm², we can get the conclusions as follow: (1) When the preloaded stretching stress increases, the necking phenomenon becomes unobvious. (2) When the preloaded stretching stress increases, both the rupture time and rupture temperature decrease monotonously. (3) When the laser power density increases, the rupture time decreases monotonously. (4) When the preloaded stretching stress or laser power density increases, the rupture threshold decreases monotonously. (5) The strain of the specimen before necking is small, and the specimen metamorphoses during necking period and the deformation of specimen is centralized in the necking region.

Citation Download Citation

Yang Zhu, Xisheng Ye, Xinwei Lin, Chenghua Wei, Lijun Wang, and Deyan Cheng "Experimental investigation on the damage effect of steel structure by continuous laser under preloaded invariable stretching stress", Proc. SPIE 8796, 2nd International Symposium on Laser Interaction with Matter (LIMIS 2012), 87960P (16 May 2013); https://doi.org/10.1117/12.2011257

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