摘要
通过SHPB(Hopkinson separate pressure bar)试验得到压杆中入射波与透射波应变随时间变化的时程曲线,求得被测素混凝土的应力与应变的关系,同时求得素混凝土的能量耗散,提出能量耗散是检验素混凝土中气泡与微裂缝程度的重要指标,对透射波的测量采用了半导体应变计技术,测量结果表明,半导体应变计技术可以较好的用在较弱的透射波测量。
The incident wave and transmission wave varing with the time have been obtained by SHPB （Hopkinson separate pressure bar） experiment. The relationship curve for stress and strain of material cement concrete has also been obtained. The history of incidence, reflection and transmitted energies are all obtained, it indicates that the porosity of the cement concrete can be analyzed by the energy dissipation. The semiconductor strain gauge has been used to measure the weak transmission wave successfully.
出处
《低温建筑技术》
2009年第2期11-12,共2页
Low Temperature Architecture Technology
基金
广东省自然科学基金项目(06301038)
