PROJECT, MANUFACTURING AND QUALIFICATION OF MACHINE TO ROTARY BENDING OF NITI SUPERELASTIC WIRES IN FATIGUE TESTS
In this work it was developed a rotating bending apparatus for fatigue tests of superelastic NiTi wires, and other materials with high elasticity. It was evaluated the performance, robustness, operability, and reliability through testing of 1 mm thick stainless steel wires. This device is mounted...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Associação Brasileira de Metalurgia, Materiais e Mineração
2014-03-01
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| Series: | Tecnologia em Metalurgia, Materiais e Mineração |
| Subjects: | |
| Online Access: | http://www.tecnologiammm.com.br/files/v11n1/v11n1a02.pdf |
| Summary: | In this work it was developed a rotating bending apparatus for fatigue tests of superelastic NiTi wires, and other
materials with high elasticity. It was evaluated the performance, robustness, operability, and reliability through testing
of 1 mm thick stainless steel wires. This device is mounted on a steel frame and features semiautomatic rotation speed
control, time and testing bath temperature for sample immersion. The equipment qualification tests were performed
controlling the following parameters: deformation of the wire, power level and ambient temperature. The results
indicated lower discrepancies for the following parameters evaluated: number of cycles in fatigue life, rotation speed, the
bath temperature and arc angle of rupture. Besides the reliability, the robustness and operability of the equipment also
meet the purpose of the research as evidenced by the small number of failures in the qualification tests and calibration. |
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| ISSN: | 2176-1515 2176-1523 |