Assessment of residual stresses and mechanical characterization of materials by hole drilling and indentation tests combined and by inverse analysis
Abstract
Hole Drilling (HD) tests are frequently employed as quasi-non-destructive experiments, for assessments of residual stresses in metallic components of power plants and of other industrial structures. With respect to the present broadly standardized HD method, the following methodological developments are proposed and computationally validated in this paper: assessments of elastic and plastic parameters by indentation exploiting the hole generated by HD tests; employment of Digital Image Correlation (DIC) for full-field displacement measurements, instead of the strain measurements by gauge rosettes usually adopted so far; transitions from experimental data to sought parameters by inverse analyses based on computer simulations of both tests and on minimizations of a discrepancy function. Interactions between the two experiments are here investigated, besides the elastic parameters transition from indentation (IND) to HD test interpretation. The main advantage achievable by the procedure p...roposed herein is reduction of additional damage and cost due to usual experimental procedures for diagnosis of structural components (e.g. frequently adopted small punch experiments or laboratory tension tests). (C) 2015 Elsevier Ltd. All rights reserved.
Keywords:
Residual stresses / Material characterization / Inverse analysis / Hole drilling test / IndentationSource:
Mechanics Research Communications, 2015, 68, SI, 18-24
DOI: 10.1016/j.mechrescom.2015.02.003
ISSN: 0093-6413
WoS: 000361414600005
Scopus: 2-s2.0-84925325859
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VinčaTY - JOUR AU - Buljak, Vladimir AU - Cocchetti, Giuseppe AU - Cornaggia, Aram AU - Maier, Giulio PY - 2015 UR - https://vinar.vin.bg.ac.rs/handle/123456789/739 AB - Hole Drilling (HD) tests are frequently employed as quasi-non-destructive experiments, for assessments of residual stresses in metallic components of power plants and of other industrial structures. With respect to the present broadly standardized HD method, the following methodological developments are proposed and computationally validated in this paper: assessments of elastic and plastic parameters by indentation exploiting the hole generated by HD tests; employment of Digital Image Correlation (DIC) for full-field displacement measurements, instead of the strain measurements by gauge rosettes usually adopted so far; transitions from experimental data to sought parameters by inverse analyses based on computer simulations of both tests and on minimizations of a discrepancy function. Interactions between the two experiments are here investigated, besides the elastic parameters transition from indentation (IND) to HD test interpretation. The main advantage achievable by the procedure proposed herein is reduction of additional damage and cost due to usual experimental procedures for diagnosis of structural components (e.g. frequently adopted small punch experiments or laboratory tension tests). (C) 2015 Elsevier Ltd. All rights reserved. T2 - Mechanics Research Communications T1 - Assessment of residual stresses and mechanical characterization of materials by hole drilling and indentation tests combined and by inverse analysis VL - 68 IS - SI SP - 18 EP - 24 DO - 10.1016/j.mechrescom.2015.02.003 ER -
@article{ author = "Buljak, Vladimir and Cocchetti, Giuseppe and Cornaggia, Aram and Maier, Giulio", year = "2015", abstract = "Hole Drilling (HD) tests are frequently employed as quasi-non-destructive experiments, for assessments of residual stresses in metallic components of power plants and of other industrial structures. With respect to the present broadly standardized HD method, the following methodological developments are proposed and computationally validated in this paper: assessments of elastic and plastic parameters by indentation exploiting the hole generated by HD tests; employment of Digital Image Correlation (DIC) for full-field displacement measurements, instead of the strain measurements by gauge rosettes usually adopted so far; transitions from experimental data to sought parameters by inverse analyses based on computer simulations of both tests and on minimizations of a discrepancy function. Interactions between the two experiments are here investigated, besides the elastic parameters transition from indentation (IND) to HD test interpretation. The main advantage achievable by the procedure proposed herein is reduction of additional damage and cost due to usual experimental procedures for diagnosis of structural components (e.g. frequently adopted small punch experiments or laboratory tension tests). (C) 2015 Elsevier Ltd. All rights reserved.", journal = "Mechanics Research Communications", title = "Assessment of residual stresses and mechanical characterization of materials by hole drilling and indentation tests combined and by inverse analysis", volume = "68", number = "SI", pages = "18-24", doi = "10.1016/j.mechrescom.2015.02.003" }
Buljak, V., Cocchetti, G., Cornaggia, A.,& Maier, G.. (2015). Assessment of residual stresses and mechanical characterization of materials by hole drilling and indentation tests combined and by inverse analysis. in Mechanics Research Communications, 68(SI), 18-24. https://doi.org/10.1016/j.mechrescom.2015.02.003
Buljak V, Cocchetti G, Cornaggia A, Maier G. Assessment of residual stresses and mechanical characterization of materials by hole drilling and indentation tests combined and by inverse analysis. in Mechanics Research Communications. 2015;68(SI):18-24. doi:10.1016/j.mechrescom.2015.02.003 .
Buljak, Vladimir, Cocchetti, Giuseppe, Cornaggia, Aram, Maier, Giulio, "Assessment of residual stresses and mechanical characterization of materials by hole drilling and indentation tests combined and by inverse analysis" in Mechanics Research Communications, 68, no. SI (2015):18-24, https://doi.org/10.1016/j.mechrescom.2015.02.003 . .