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A theoretical analysis of vibrational stress relief in AISI 1008 as a mechanical treatment

Vardanjani Mehdi Jafari, Senkara Jacek

Archive of Mechanical Engineering

2021

LXVIII, nr 4

353--374

Vibrational stress relief (VSR) treatment as a method of stress relief is currently performed on different alloys and sizes as an appropriate alternative for thermal stress relief (TSR) method. Although many studies have been performed to extend the knowledge about this process, analytical studies in the field of VSR process seems to require wider efforts to introduce the concept more clearly and extensively. In this study, a theoretical model is proposed based on an analytical equation. The proposed equation was modified in terms of required variables including frequency, amplitude, and vibration duration to encompass more practical parameters compared to the previous models. Thus, essential VSR parameters including the number of cycles as a representative of treatment duration, strain rate as a representative of frequency, and the amplitude were embedded in the model to make it comprehensively practical. Experimental tests were also performed and residual stress distribution was measured by X-ray diffractometry (XRD) method for certain points to compare the experimental results with the theoretical output. An acceptable range of conformation was observed between theoretical and experimental results.

Wpływ nowych technik wytwarzania na konstrukcję samolotu

Adamski W.

Mechanik

2015

R. 88, nr 12CD3

1--5

W pracy podano jak przy wykorzystaniu nowo powstałych technologii i strategii obróbki części w przemyśle lotniczym można obniżyć koszty wytwarzania. Podano przykłady wdrożeń w przemyśle lotniczym. Zastosowanie HSM w lotnictwie wymusiło zmianę w konstrukcji dzisiejszych samolotów. Opisano strategię obróbki cienkich ścianek i wręg struktury samolotu. Zwrócono uwagę na nowe technologie jak technologia przyrostowa i odprężanie wibracyjne.

The paper describes how the use of modern technologies and parts machining strategies can reduce manufacturing costs in the aerospace industry. Sample implementations in the aerospace industry have been presented. The use of HSM in aviation forced a change in today's aircraft designs. Machining strategy for thin walls and aircraft structure framers have been described. Modern technologies of manufacturing like Additive Manufacturing and Vibratory Stress Relief have been presented.