Abrégé

A method of performing indentation plastometry is provided. The method includes steps of: providing a sample of a material and an indenter having a contact surface of a predetermined shape and size; forming a first indent having a first penetration depth within the sample by applying a load to press the contact surface of the indenter into the sample; measuring a first indent profile of the first indent; on the basis of the first indent profile, and the applied load to form the first indent, obtaining a preliminary measurement of a characteristic of the material; on the basis of the obtained preliminary measurement of the characteristic of the material, determining whether a second indent having a different, second penetration depth is required to obtain a more accurate measurement of the characteristic of the material, and when the second indent is required, determining a value for the second penetration depth; forming the second indent having the second penetration depth within the sample by applying a load to press the contact surface of the indenter into the sample; measuring a second indent profile of the second indent; and on the basis of the second indent profile, the applied load to form the second indent, obtaining the more accurate measurement of the characteristic of the material.

Classes IPC  ?

• G01N 3/44 - Recherche de la dureté ou de la dureté au rebondissement en effectuant des empreintes sous une charge permanente par des dispositifs de pénétration, p. ex. sphère, pyramide les dispositifs de pénétration étant placés sous une faible charge initiale, puis sous une charge importante, c.-à-d. le procédé Rockwell

Classes IPC  ?

• G01B 5/20 - Dispositions pour la mesure caractérisées par l'utilisation de techniques mécaniques pour mesurer des contours ou des courbes
• G01B 11/24 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer des contours ou des courbes
• G01N 3/42 - Recherche de la dureté ou de la dureté au rebondissement en effectuant des empreintes sous une charge permanente par des dispositifs de pénétration, p. ex. sphère, pyramide

Abrégé

A method of performing profilometry-based indentation plastometry, including: a measuring step of scanning a surface of a sample, the surface having an indentation formed therein, using a profilometer to obtain scanned data representing the shape of the scanned surface, a curvature correction step of correcting the scanned data by applying a transform function to obtain corrected data in which a curvature of the scanned surface represented in the scanned data is reduced in a first surface direction, and a determining step of determining a material characteristic of the sample using the corrected data. Also provided is: an apparatus for performing profilometry-based indentation plastometry; a computer program comprising code which, when the code is executed on a computer, causes the computer to execute a curvature correction process of correcting scanned data obtained from a profilometer; a computer readable medium storing the computer program; and a computer programmed to execute the computer program.

Classes IPC  ?

• G01B 11/24 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer des contours ou des courbes
• G01B 5/20 - Dispositions pour la mesure caractérisées par l'utilisation de techniques mécaniques pour mesurer des contours ou des courbes
• G01N 3/42 - Recherche de la dureté ou de la dureté au rebondissement en effectuant des empreintes sous une charge permanente par des dispositifs de pénétration, p. ex. sphère, pyramide

Classes IPC  ?

• G01N 3/42 - Recherche de la dureté ou de la dureté au rebondissement en effectuant des empreintes sous une charge permanente par des dispositifs de pénétration, p. ex. sphère, pyramide

Abrégé

A portable apparatus for performing indentation plastometry, the apparatus comprising: a cradle configured to receive a plurality of modules interchangeably, and a securing mechanism configured to mount the cradle relative to a sample body with respect to a testing surface of the sample body, the plurality of modules including: an indenter module comprising an indenter movable in a penetration direction for forming an indentation in the testing surface, and a profilometer module comprising a profilometer for measuring the testing surface. Also provided is a method of performing indentation plastometry using the portable apparatus. Also provided is a method of performing indentation plastometry on a sample material, the method including the steps of: forming an indentation in a testing surface of the sample material using an indenter, etching the testing surface, and performing an optical scan of the testing surface using an optical profilometer.

Classes IPC  ?

• G01N 3/42 - Recherche de la dureté ou de la dureté au rebondissement en effectuant des empreintes sous une charge permanente par des dispositifs de pénétration, p. ex. sphère, pyramide

Abrégé

A method of performing indentation plastometry is provided. The method includes steps of: providing a sample of a material and an indenter having a contact surface of a predetermined shape and size; forming a first indent having a first penetration depth within the sample by applying a load to press the contact surface of the indenter into the sample; measuring a first indent profile of the first indent; on the basis of the first indent profile, and the applied load to form the first indent, obtaining a preliminary measurement of a characteristic of the material; on the basis of the obtained preliminary measurement of the characteristic of the material, determining whether a second indent having a different, second penetration depth is required to obtain a more accurate measurement of the characteristic of the material, and when the second indent is required, determining a value for the second penetration depth; forming the second indent having the second penetration depth within the sample by applying a load to press the contact surface of the indenter into the sample; measuring a second indent profile of the second indent; and on the basis of the second indent profile, the applied load to form the second indent, obtaining the more accurate measurement of the characteristic of the material.

Classes IPC  ?

• G01N 3/42 - Recherche de la dureté ou de la dureté au rebondissement en effectuant des empreintes sous une charge permanente par des dispositifs de pénétration, p. ex. sphère, pyramide
• G01N 3/44 - Recherche de la dureté ou de la dureté au rebondissement en effectuant des empreintes sous une charge permanente par des dispositifs de pénétration, p. ex. sphère, pyramide les dispositifs de pénétration étant placés sous une faible charge initiale, puis sous une charge importante, c.-à-d. le procédé Rockwell