Session: 02-03-02: Aeroacoustics, Dynamic Loads, Wave Propagations, Response, Vibration, Control, and Alleviation of Aerospace Structures and Vehicles

Paper Number: 182839

182839 - A New Strategy for Vibration Test Tailoring Based on Mission Profile Analysis 

In this study, the profile synthesis technique was used to determine the vibration profile of military aircraft equipment under two distinct transport and usage scenarios. This made it possible to create a laboratory test profile that reflected every vibrational environment that the equipment would encounter over the course of its lifetime. The overall vibration profile includes transportation conditions by rail, road, sea, and air. The vibration life profile was derived from test measurements data (propeller aircraft and helicopter) and MIL-STD-810H Department of Defense Test Method Standard. The ERS (extreme response spectrum) and FDS (fatigue damage spectrum) spectra were used as references in creating PSD (power spectral density) profile. NCODE Glyphworks 2024 software was used to synthesize the life profile in the study. A new approach to electromechanical equipment was established at the end of the study. The strategy was determined using the DEF00-35 standard's critical frequency ranges for electronic equipment. It is advised that hybrid test profiles developed in accordance with various fatigue curves (Basquin's exponent) be used for laboratory testing in such a scenario. Finally, optimum usage scenario was proposed based on fatigue damage spoectrum of two different endurance vibration test profiles.

Keywords: Mission synthesis, PSD, ERS, FDS, vibration fatigue, Basquin exponent

Presenting Author: Murathan Abi̇ş ASELSAN

Presenting Author Biography: I graduated from Istanbul Technical University at 2020. After graduation, I worked as a structural analysis engineer at BIAS Engineering for 6 months. I was responsible about explicit analysis and material characterization for structural analysis using LS-DYNA. I have been working in ASELSAN since 2022. My expertise are structural analysis using finite element method (especially dynamic analysis) and structural testing using data acquisition systems with different sensors.