Method for testing the strength of sheets made of hard brittle material under tensile stress

    公开(公告)号:US10571376B2

    公开(公告)日:2020-02-25

    申请号:US15261409

    申请日:2016-09-09

    Applicant: SCHOTT AG

    Abstract: A method for testing the strength of a sheet-like element having two opposite faces and made of hard brittle material under tensile stress is provided. The method includes passing each of the faces of the element over a roller and thereby bending the element so that each of the faces is subjected to a first tensile stress in a portion in which the opposite face is in contact with a surface of the roller; exerting a second tensile force on the element in the direction of advancement so that both faces are subjected to the second tensile stress of at least 2 MPa so that the first and second tensile stresses add up to define a resultant tensile stress; and monitoring the element and determining whether the element has a defined breaking strength equal to the resultant tensile stress or whether the element breaks under the resultant tensile stress.

    Apparatus for testing the strength of sheets made of hard brittle material under tensile stress

    公开(公告)号:US11181453B2

    公开(公告)日:2021-11-23

    申请号:US16740564

    申请日:2020-01-13

    Applicant: SCHOTT AG

    Abstract: A method for testing the strength of a sheet-like element having two opposite faces and made of hard brittle material under tensile stress is provided. The method includes passing each of the faces of the element over a roller and thereby bending the element so that each of the faces is subjected to a first tensile stress in a portion in which the opposite face is in contact with a surface of the roller; exerting a second tensile force on the element in the direction of advancement so that both faces are subjected to the second tensile stress of at least 2 MPa so that the first and second tensile stresses add up to define a resultant tensile stress; and monitoring the element and determining whether the element has a defined breaking strength equal to the resultant tensile stress or whether the element breaks under the resultant tensile stress.

    APPARATUS AND METHOD FOR TESTING THE STRENGTH OF SHEETS MADE OF HARD BRITTLE MATERIAL

    公开(公告)号:US20200150012A1

    公开(公告)日:2020-05-14

    申请号:US16740564

    申请日:2020-01-13

    Applicant: SCHOTT AG

    Abstract: A method for testing the strength of a sheet-like element having two opposite faces and made of hard brittle material under tensile stress is provided. The method includes passing each of the faces of the element over a roller and thereby bending the element so that each of the faces is subjected to a first tensile stress in a portion in which the opposite face is in contact with a surface of the roller; exerting a second tensile force on the element in the direction of advancement so that both faces are subjected to the second tensile stress of at least 2 MPa so that the first and second tensile stresses add up to define a resultant tensile stress; and monitoring the element and determining whether the element has a defined breaking strength equal to the resultant tensile stress or whether the element breaks under the resultant tensile stress.

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