The impact of key variables on hardness measurements, including indenter velocity, geometry, dwell times, forces, and temperature, has been extensively studied in recent decades. The recent adoption of international Rockwell hardness scale definitions has intensified this interest. While these definitions and relevant standards consider parameter ranges, the Rockwell hardness equation lacks explicit incorporation of these variables, requiring an empirical determination of their sensitivity coefficients. This study focuses on the determination of sensitivity coefficients associated with two main influential parameters − the velocity of the final load application and the time interval for the force variation from the preliminary force value to the total force value − across Rockwell B, C, 45N, 30N, and 15N hardness scales at various hardness levels, using a Monte Carlo method and multiple linear regression. The results align with findings in existing literature, enhancing the robustness and reliability of the study.

Experimental determination of sensitivity coefficients of some influence parameters in Rockwell B, C, 15N, 30N and 45N / Prato, Andrea; Guido, Roberto; Murgia, Marcello; Guerra, Alberto; Rizza, Pierluigi; Origlia, Claudio; Germak, Alessandro. - In: MEASUREMENT. SENSORS. - ISSN 2665-9174. - (2024). [10.1016/j.measen.2024.101449]

Experimental determination of sensitivity coefficients of some influence parameters in Rockwell B, C, 15N, 30N and 45N

Prato, Andrea
Writing – Original Draft Preparation
;
Rizza, Pierluigi
Membro del Collaboration Group
;
Origlia, Claudio
Investigation
;
Germak, Alessandro
Methodology
2024

Abstract

The impact of key variables on hardness measurements, including indenter velocity, geometry, dwell times, forces, and temperature, has been extensively studied in recent decades. The recent adoption of international Rockwell hardness scale definitions has intensified this interest. While these definitions and relevant standards consider parameter ranges, the Rockwell hardness equation lacks explicit incorporation of these variables, requiring an empirical determination of their sensitivity coefficients. This study focuses on the determination of sensitivity coefficients associated with two main influential parameters − the velocity of the final load application and the time interval for the force variation from the preliminary force value to the total force value − across Rockwell B, C, 45N, 30N, and 15N hardness scales at various hardness levels, using a Monte Carlo method and multiple linear regression. The results align with findings in existing literature, enhancing the robustness and reliability of the study.
File in questo prodotto:
File Dimensione Formato  
Experimental determination of sensitivity coefficients of some influence parameters in Rockwell B, C, 15N, 30N and 45N.pdf

accesso aperto

Tipologia: final published article (publisher’s version)
Licenza: Pubblico - Tutti i diritti riservati
Dimensione 2.66 MB
Formato Adobe PDF
2.66 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11696/83519
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? ND
social impact