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.
Ključne reči:
Residual stresses / Material characterization / Inverse analysis / Hole drilling test / Indentation
Izvor:
Mechanics Research Communications, 2015, 68, SI, 18-24
TY - 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 . .
