An enhanced analytical model for residual stress prediction in machining

Date

2008-01-01

Author

Lazoglu, I.
Ulutan, D.
Alaca, B. E.
Engin, S.
Kaftanoglu, B.

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

189
views

0
downloads

The predictions of residual stresses are most critical on the machined aerospace components for the safety of the aircraft. In this paper, an enhanced analytic elasto-plastic model is presented using the superposition of thermal and mechanical stresses on the workpiece, followed by a relaxation procedure. Theoretical residual stress predictions are verified experimentally with X-ray diffraction measurements on the high strength engineering material of Waspaloy that is used critical parts such as in aircraft jet engines. With the enhanced analytical model, accurate residual stress results are achieved, while the computational time compared to equivalent FEM models is decreased from days to secends. (c) 2008 CIRP.

Subject Keywords

Residual stresses, Simulation, Machining

URI

https://hdl.handle.net/11511/68038

Journal

CIRP ANNALS-MANUFACTURING TECHNOLOGY

DOI

https://doi.org/10.1016/j.cirp.20013.03.060

Collections

Department of Mechanical Engineering, Article

Suggestions

OpenMETU
Core

A new method to determine dynamically equivalent finite element models of aircraft structures from modal test data Karaağaçlı, Taylan; Yıldız, Erdinç N.; Özgüven, Hasan Nevzat (Elsevier BV, 2012-8) Flutter analysis is a major requirement to predict safe flight envelops and to decide on flutter testing conditions of newly designed or modified aircraft structures. In order to achieve reliable flutter analysis of an aircraft structure, it is necessary to obtain a good correlation between its finite element (FE) model and experimental modal data. Currently available model updating methods require construction of a detailed initial FE model in order to achieve convergence of the modes obtained from updated...
A simplistic flight model for exergy embodiment of composite materials towards nearly-zero exergy aviation Kilkis, Birol; Kilkis, San; Kılkış, Şiir (2019-01-01) In this paper, a new model for the embodied exergy payback period is presented, which considers the exergy savings during acceleration and take-off, climb, trim-level cruise, descent and thrust reversal in landing for each flight versus higher exergy embodiment of composites that are used during manufacturing when compared to metals. The research work has ramifications for determining the optimum balance of lightweight and conventional material usage, thus improving the economic and environmental performanc...
A New method for the calculation of static flight loads of rigid fuselage of rotorcraft Gül, Seyhan; Yaman, Yavuz; Department of Aerospace Engineering (2016) The loads acting on a rotorcraft fuselage in pull-up, push-over, and yaw maneuvers and gust conditions are required to be calculated by civil and military standards. For each maneuver and the gust condition, different flight and rotor speeds, mass states, altitudes, and temperatures are required to be analyzed. This may add up to thousands of conditions. Calculation of fuselage loads for all these conditions with transient analysis is not only computationally expensive but it also requires a lot of engineer...
Determination of shot peening effect on fatigue behavior of AISI 4140 steel by non-destructive measurement of surface residual stresses Çalışkan, Salim; Gür, Cemil Hakan; Department of Metallurgical and Materials Engineering (2018) The fatigue performance of aircraft parts can be improved by inducing compressive residual stresses in the near-surface zone by shot-peening. The depth profile and the magnitude of residual stresses depend on the shot peening parameters. Aircraft industry requires an easy and rapid non-destructive method for determination of residual stress state to verify the achievement of the desired results of shot-peening. This study aims to determine nondestructively the residual stresses at the surface by the Magneti...
A Model based approach for aircraft sensor fault detection Serçekman, Ömür; Kutay, Ali Türker; Department of Aerospace Engineering (2018) This thesis presents a reformative approach to a model-based fault detection and diagnosis (FDD) method that improves the capability of aircraft flight control systems and acquires low complexity and computational requirements. The main objective of the FDD techniques that are extensively applied in industrial systems is to increase the sensitivity of fault detection scheme with respect to additional noise, uncertainty or disturbances. The designed fault detection model is integrated to a civil aircraft mod...

Citation Formats

I. Lazoglu, D. Ulutan, B. E. Alaca, S. Engin, and B. Kaftanoglu, “An enhanced analytical model for residual stress prediction in machining,” CIRP ANNALS-MANUFACTURING TECHNOLOGY, pp. 81–84, 2008, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/68038.