title: A novel in situ device based on a bionic piezoelectric actuator to study tensile and fatigue properties of bulk materials.
abstract: In this work, a miniaturized device based on a bionic piezoelectric actuator was developed to investigate the static tensile and dynamic fatigue properties of bulk materials. The device mainly consists of a bionic stepping piezoelectric actuator based on wedge block clamping, a pair of grippers, and a set of precise signal test system. Tensile and fatigue examinations share a set of driving system and a set of signal test system. In situ tensile and fatigue examinations under scanning electron microscope or metallographic microscope could be carried out due to the miniaturized dimensions of the device. The structure and working principle of the device were discussed and the effects of output difference between two piezoelectric stacks on the device were theoretically analyzed. The tensile and fatigue examinations on ordinary copper were carried out using this device and its feasibility was verified through the comparison tests with a commercial tensile examination instrument.
authors.affiliation: The Key Laboratory of Engineering Bionics (Ministry of Education) and the College of Biological and Agricultural Engineering, Jilin University (Nanling Campus), 5988 Renmin Street, Changchun 130025, People's Republic of China.
authors.forename: Shupeng
authors.initials: S
authors.lastname: Wang
authors.affiliation: The Key Laboratory of Engineering Bionics (Ministry of Education) and the College of Biological and Agricultural Engineering, Jilin University (Nanling Campus), 5988 Renmin Street, Changchun 130025, People's Republic of China.
authors.forename: Zhihui
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: The Key Laboratory of Engineering Bionics (Ministry of Education) and the College of Biological and Agricultural Engineering, Jilin University (Nanling Campus), 5988 Renmin Street, Changchun 130025, People's Republic of China.
authors.forename: Luquan
authors.initials: L
authors.lastname: Ren
authors.affiliation: College of Mechanical Science and Engineering, Jilin University (Nanling Campus), 5988 Renmin Street, Changchun 130025, People's Republic of China.
authors.forename: Hongwei
authors.initials: H
authors.lastname: Zhao
authors.affiliation: The Key Laboratory of Engineering Bionics (Ministry of Education) and the College of Biological and Agricultural Engineering, Jilin University (Nanling Campus), 5988 Renmin Street, Changchun 130025, People's Republic of China.
authors.forename: Yunhong
authors.initials: Y
authors.lastname: Liang
authors.affiliation: College of Automotive Engineering, Jilin University (Nanling Campus), 5988 Renmin Street, Changchun 130025, People's Republic of China.
authors.forename: Bing
authors.initials: B
authors.lastname: Zhu
mesh_terms: D001701:Bionics / Q000295:instrumentation / Q000379:methods; D008422:Materials Testing / Q000295:instrumentation / Q000379:methods; D013718:Tensile Strength; D013784:Textiles