Estimation of residual stresses by inverse analysis based on experimental data from sample removal for small punch tests
Само за регистроване кориснике
2017
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Small Punch (SP) tests, at present frequently employed for mechanical characterizations of structural metals, particularly for diagnosis of plant components, are here considered in view of employment also for assessments of stresses. In the procedure proposed herein the standardised sample removal from an in-service component for SP tests is exploited as external action altering the residual stress state possibly present near to the surface in the location considered. Full-field measurements of consequent displacements in the surrounding surface are employed as input for inverse analysis based on the following features: computer simulations of the sample removal as for its consequences due to relaxation of the preexisting stress state; non-uniformity of residual-stress dependence on depth described as layer dependent with uniformity in each layer of a pre-defined set of layers; discrepancy function minimization with employment of the elasticity parameters provided by the subsequent SP ...test. The advantages of the novel method consist of no-more need of traditional usual Hole Drilling (HD) tests or other tests for residual-stress estimation. The SP experimental procedure proposed herein for estimations of both stress state and elastic-plastic material properties would imply reductions of damages, costs and times in structural diagnoses. (C) 2017 Elsevier Ltd. All rights reserved.
Кључне речи:
Small punch test / Stress identification / Parameters identification / Inverse analysisИзвор:
Engineering Structures, 2017, 136, 77-86Финансирање / пројекти:
DOI: 10.1016/j.engstruct.2016.12.062
ISSN: 0141-0296; 1873-7323
WoS: 000395611400007
Scopus: 2-s2.0-85009344001
Колекције
Институција/група
VinčaTY - JOUR AU - Buljak, Vladimir AU - Cocchetti, Giuseppe AU - Cornaggia, Aram AU - Maier, Giulio PY - 2017 UR - https://vinar.vin.bg.ac.rs/handle/123456789/1442 AB - Small Punch (SP) tests, at present frequently employed for mechanical characterizations of structural metals, particularly for diagnosis of plant components, are here considered in view of employment also for assessments of stresses. In the procedure proposed herein the standardised sample removal from an in-service component for SP tests is exploited as external action altering the residual stress state possibly present near to the surface in the location considered. Full-field measurements of consequent displacements in the surrounding surface are employed as input for inverse analysis based on the following features: computer simulations of the sample removal as for its consequences due to relaxation of the preexisting stress state; non-uniformity of residual-stress dependence on depth described as layer dependent with uniformity in each layer of a pre-defined set of layers; discrepancy function minimization with employment of the elasticity parameters provided by the subsequent SP test. The advantages of the novel method consist of no-more need of traditional usual Hole Drilling (HD) tests or other tests for residual-stress estimation. The SP experimental procedure proposed herein for estimations of both stress state and elastic-plastic material properties would imply reductions of damages, costs and times in structural diagnoses. (C) 2017 Elsevier Ltd. All rights reserved. T2 - Engineering Structures T1 - Estimation of residual stresses by inverse analysis based on experimental data from sample removal for small punch tests VL - 136 SP - 77 EP - 86 DO - 10.1016/j.engstruct.2016.12.062 ER -
@article{ author = "Buljak, Vladimir and Cocchetti, Giuseppe and Cornaggia, Aram and Maier, Giulio", year = "2017", abstract = "Small Punch (SP) tests, at present frequently employed for mechanical characterizations of structural metals, particularly for diagnosis of plant components, are here considered in view of employment also for assessments of stresses. In the procedure proposed herein the standardised sample removal from an in-service component for SP tests is exploited as external action altering the residual stress state possibly present near to the surface in the location considered. Full-field measurements of consequent displacements in the surrounding surface are employed as input for inverse analysis based on the following features: computer simulations of the sample removal as for its consequences due to relaxation of the preexisting stress state; non-uniformity of residual-stress dependence on depth described as layer dependent with uniformity in each layer of a pre-defined set of layers; discrepancy function minimization with employment of the elasticity parameters provided by the subsequent SP test. The advantages of the novel method consist of no-more need of traditional usual Hole Drilling (HD) tests or other tests for residual-stress estimation. The SP experimental procedure proposed herein for estimations of both stress state and elastic-plastic material properties would imply reductions of damages, costs and times in structural diagnoses. (C) 2017 Elsevier Ltd. All rights reserved.", journal = "Engineering Structures", title = "Estimation of residual stresses by inverse analysis based on experimental data from sample removal for small punch tests", volume = "136", pages = "77-86", doi = "10.1016/j.engstruct.2016.12.062" }
Buljak, V., Cocchetti, G., Cornaggia, A.,& Maier, G.. (2017). Estimation of residual stresses by inverse analysis based on experimental data from sample removal for small punch tests. in Engineering Structures, 136, 77-86. https://doi.org/10.1016/j.engstruct.2016.12.062
Buljak V, Cocchetti G, Cornaggia A, Maier G. Estimation of residual stresses by inverse analysis based on experimental data from sample removal for small punch tests. in Engineering Structures. 2017;136:77-86. doi:10.1016/j.engstruct.2016.12.062 .
Buljak, Vladimir, Cocchetti, Giuseppe, Cornaggia, Aram, Maier, Giulio, "Estimation of residual stresses by inverse analysis based on experimental data from sample removal for small punch tests" in Engineering Structures, 136 (2017):77-86, https://doi.org/10.1016/j.engstruct.2016.12.062 . .