The Influence of Thread Length and Tightening Torque of the M8/M12 Bolts on the Vibration Fixture Response

Abstract:

The paper presents an experimental investigation of the influence of thread length and tightening torque of the M8 and M12 bolts on the vibration fixture response. To perform the tests electromagnetic vibration exciter with amplifier (LDS V8900), controller (M+P), single-axis control and measurement accelerometer (PCB), and calibrated dynamometric key (Hazet) were used. As vibration profile was used sinusoidal on a linear scale amplitude (g²) versus time (Hertz) according to the IEC 60068-2-6 standard. To investigate the length and diameter of the bolts aluminum 7075 T6 fixtures with dimensions of 40 mm ´ 40 mm width and different lengths were used as part of the samples. It was found that the investigated parameters have a major influence on the vibration fixture response.

• Periodical: Advanced Engineering Forum (Volume 53)
• Pages: 113-118
• DOI: https://doi.org/10.4028/p-dhL3yH
• Online since: December 2024
• Authors: Christian Öhl, Marian Rus, Denis-Florin Mădroane, Iuliana Duma, Sergiu Valentin Galatanu*, Emanoil Linul
• Keywords: Bolts, Frequency Response Function, Vibration Tests

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