Design of a in-situ stress loading system used for residual stress neutron diffractometer

被引：0
|
作者：
Zhang, Ying [1 ,2 ]
Pang, Beibei [1 ]
Xi, Zhiguo [1 ,2 ]
Li, Jian [1 ,2 ]
机构：
[1] Institute of Nuclear Physics and Chemistry, CAEP, Mianyang 621900
[2] Key Laboratory for Neutron Physics, CAEP, Mianyang 621900
来源：
Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams | 2013年 / 25卷 / 11期
关键词：
In-situ loading; Neutron diffraction; Strain; Stress;
D O I：
10.3788/HPLPB20132511.2865
中图分类号：
学科分类号：
摘要：
A self-developed miniaturized stress loading system equipped with residual stress neutron diffractometer can actualize in situ measurement of polycrystalline material. It makes possible further acquirement about phase, texture and stress evolution within material and the building of a material macro constitutive model based on micromechanism. This system utilizes servo motor to provide motive power, and chooses 7050 aluminum alloy material to fabricate mechanical structure, whose tensile strength can reach up to 10 kN and the move speed can be adjusted between 1 μm/s and 1 mm/s. The S-type sensor used in the system will be deformed when it receives force and exports voltage signals, which will be dealt with by PLC program, and then the relationship between sample stress and strain can be obtained. The results obtained by 10 kN in-situ stretcher were in close agreement with the stress-strain profiles obtained by Instron 5967 stretcher on the same type steel samples.
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页码：2865 / 2868
页数：3
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