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CA2427818A1 - Apparatus and method for testing stiffness of articles - Google Patents

Apparatus and method for testing stiffness of articles Download PDF

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Publication number
CA2427818A1
CA2427818A1 CA 2427818 CA2427818A CA2427818A1 CA 2427818 A1 CA2427818 A1 CA 2427818A1 CA 2427818 CA2427818 CA 2427818 CA 2427818 A CA2427818 A CA 2427818A CA 2427818 A1 CA2427818 A1 CA 2427818A1
Authority
CA
Canada
Prior art keywords
article
working element
magnitude
testing
spaced apart
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA 2427818
Other languages
French (fr)
Other versions
CA2427818C (en
Inventor
Jean-Claude Ouellet
Jean Campagna
Danick Dupont
Gratien Beauchemin
Jacques Labbe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
INVESTISSEMENT QUEBEC
Original Assignee
Centre de Recherche Industrielle du Quebec CRIQ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Centre de Recherche Industrielle du Quebec CRIQ filed Critical Centre de Recherche Industrielle du Quebec CRIQ
Priority to CA002427818A priority Critical patent/CA2427818C/en
Publication of CA2427818A1 publication Critical patent/CA2427818A1/en
Application granted granted Critical
Publication of CA2427818C publication Critical patent/CA2427818C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/40—Investigating hardness or rebound hardness
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014—Type of force applied
    • G01N2203/0023—Bending

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

An apparatus for testing stiffness characteristics of an article such as a piece of lumber moving in a conveying direction transverse to the testing axis, comprises a bearing unit capable of contacting the article at two spaced apart portions thereof. A first deflecting unit includes a first working element applying a first thrust against a loaded area on the article at an intermediary portion thereof located between the spaced apart portions, to produce an article deflection of a first magnitude. Each working element defines a loading surface extending substantially parallel to the article-conveying path. A second deflecting unit includes a second working element for applying a second thrust against a loaded area of the article intermediary portion, to produce an article deflection of a second magnitude. Load cells coupled to the bearing unit generates signals indicative of respective magnitudes of the thrusts, from which a computer derives stiffness indication.
CA002427818A 2002-05-02 2003-05-02 Apparatus and method for testing stiffness of articles Expired - Lifetime CA2427818C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002427818A CA2427818C (en) 2002-05-02 2003-05-02 Apparatus and method for testing stiffness of articles

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CA2384553 2002-05-02
CA2,384,553 2002-05-02
CA002427818A CA2427818C (en) 2002-05-02 2003-05-02 Apparatus and method for testing stiffness of articles

Publications (2)

Publication Number Publication Date
CA2427818A1 true CA2427818A1 (en) 2003-11-02
CA2427818C CA2427818C (en) 2006-06-13

Family

ID=29421122

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002427818A Expired - Lifetime CA2427818C (en) 2002-05-02 2003-05-02 Apparatus and method for testing stiffness of articles

Country Status (1)

Country Link
CA (1) CA2427818C (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106081157A (en) * 2016-06-17 2016-11-09 中国飞机强度研究所 A kind of vertical following loading device
CN113686860A (en) * 2021-09-11 2021-11-23 广东科视光学技术股份有限公司 Full-automatic optical detection equipment
CN114166510A (en) * 2021-10-20 2022-03-11 中国航发四川燃气涡轮研究院 Measuring device for transverse rigidity of force measuring assembly
CN115096573A (en) * 2022-06-30 2022-09-23 中国地质大学（北京） Test Equipment
CN116678741A (en) * 2023-05-31 2023-09-01 涿州市紫阳机械设备科技有限公司 Mechanical part machining equipment with detection function

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106081157A (en) * 2016-06-17 2016-11-09 中国飞机强度研究所 A kind of vertical following loading device
CN106081157B (en) * 2016-06-17 2018-12-11 中国飞机强度研究所 A kind of vertical following loading device
CN113686860A (en) * 2021-09-11 2021-11-23 广东科视光学技术股份有限公司 Full-automatic optical detection equipment
CN114166510A (en) * 2021-10-20 2022-03-11 中国航发四川燃气涡轮研究院 Measuring device for transverse rigidity of force measuring assembly
CN115096573A (en) * 2022-06-30 2022-09-23 中国地质大学（北京） Test Equipment
CN115096573B (en) * 2022-06-30 2023-12-22 中国地质大学（北京） Test Equipment
CN116678741A (en) * 2023-05-31 2023-09-01 涿州市紫阳机械设备科技有限公司 Mechanical part machining equipment with detection function
CN116678741B (en) * 2023-05-31 2023-10-27 涿州市紫阳机械设备科技有限公司 Mechanical part machining equipment with detection function

Also Published As

Publication number Publication date
CA2427818C (en) 2006-06-13

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MKEX Expiry

Effective date: 20230502