Residual Stress Measurement in a Ceramic-Metallic Graded Material
- 26 March 2002
- journal article
- Published by ASME International in Journal of Engineering Materials and Technology
- Vol. 124 (2), 185-191
- https://doi.org/10.1115/1.1446073
Abstract
This paper presents experimental measurements of the through-thickness distribution of residual stress in a ceramic-metallic functionally graded material (FGM). It further presents an error analysis and optimization of the residual stress measurement technique. Measurements are made in a seven-layered plate with a base of commercially pure titanium and successive layers containing an increasing proportion of titanium-boride, reaching 85% titanium-boride in the final layer. The compliance method is employed to determine residual stress, where a slot is introduced using wire electric-discharge machining and strain release is measured as a function of increasing slot depth. Strain release measurements are used with a back-calculation scheme, based on finite element simulation, to provide residual stresses in the FGM. The analysis is complicated by the variation of material properties in the FGM, but tractable due to the flexibility of the finite element method. The Monte Carlo approach is used for error analysis and a method is described for optimization of the functional form assumed for the residual stresses. The magnitude and variation of the resulting residual stress distributions and several aspects of the error analyses are discussed.Keywords
This publication has 12 references indexed in Scilit:
- Thermo-elasto-plastic stresses in functionally graded materials subjected to thermal loading taking residual stresses of the fabrication process into considerationComposites Part B: Engineering, 2001
- A novel technique to generate sharp cracks in metallic/ceramic functionally graded materials by reverse 4-point bendingScripta Materialia, 2000
- Residual stress studies in graded W/Cu materials by neutron diffraction methodPhysica B: Condensed Matter, 2000
- An approximate method for residual stress calculation in functionally graded materialsMechanics of Materials, 2000
- Effects of residual stress on the performance of plasma sprayed functionally graded ZrO2/NiCoCrAlY coatingsMaterials Science and Engineering: A, 2000
- Fracture Testing and Analysis of a Layered Functionally Graded Ti/TiB Beam in 3-Point BendingMaterials Science Forum, 1999
- Residual Stress Measurement by Successive Extension of a Slot: The Crack Compliance MethodApplied Mechanics Reviews, 1999
- Residual Strains in an Al2O3‐Ni Joint Bonded with a Composite Interlayer: Experimental Measurements and FEM AnalysesJournal of the American Ceramic Society, 1998
- Numerical and experimental determination of residual stresses in graded materialsComposites Part B: Engineering, 1997
- Analysis of thermal residual stress in a thick-walled ring of duralcan-base Al-SiC functionally graded materialMetallurgical and Materials Transactions A, 1996