SE7609692L - KITS AND APPARATUS TO META THE STRENGTH OF A MATERIAL - Google Patents

KITS AND APPARATUS TO META THE STRENGTH OF A MATERIAL

Info

Publication number
SE7609692L
SE7609692L SE7609692A SE7609692A SE7609692L SE 7609692 L SE7609692 L SE 7609692L SE 7609692 A SE7609692 A SE 7609692A SE 7609692 A SE7609692 A SE 7609692A SE 7609692 L SE7609692 L SE 7609692L
Authority
SE
Sweden
Prior art keywords
wood
plug
penetration
extent
impact strength
Prior art date
Application number
SE7609692A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE420132B (en
Inventor
P Hoffmeyer
Original Assignee
Wood Slimp Gmbh
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 Wood Slimp Gmbh filed Critical Wood Slimp Gmbh
Publication of SE7609692L publication Critical patent/SE7609692L/en
Publication of SE420132B publication Critical patent/SE420132B/en

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
    • G01N3/40—Investigating hardness or rebound hardness
    • G01N3/48—Investigating hardness or rebound hardness by performing impressions under impulsive load by indentors, e.g. falling ball

Abstract

The disclosure relates to a method for the nondestructive testing of wood to determine the impact strength thereof essentially independently of the moisture content. The method involves driving a piercing plug having a blunt head into a body of wood substantially transverse to the grain thereof by imparting to said piercing plug a predetermined amount of kinetic energy to cause the plug to penetrate the wood and rupture fibers thereof to produce surfaces of fracture as a result of dynamic bending stress and dynamic tensile stress of the wood fibers, and determining the extent of penetration of the plug into the wood, whereby said extent of penetration is proportional to the impact strength of the wood.
SE7609692A 1975-09-03 1976-09-02 KIT AND APPARATUS FOR SATURING THE TEMPORARILY OF A MATERIAL SE420132B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK394375A DK138862B (en) 1975-09-03 1975-09-03 Method and apparatus for measuring the strength of a body, in particular a wooden blank.

Publications (2)

Publication Number Publication Date
SE7609692L true SE7609692L (en) 1977-03-04
SE420132B SE420132B (en) 1981-09-14

Family

ID=8128521

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7609692A SE420132B (en) 1975-09-03 1976-09-02 KIT AND APPARATUS FOR SATURING THE TEMPORARILY OF A MATERIAL

Country Status (9)

Country Link
JP (1) JPS5917778B2 (en)
CA (1) CA1076388A (en)
DE (1) DE2638261A1 (en)
DK (1) DK138862B (en)
ES (1) ES451200A1 (en)
FR (1) FR2323140A1 (en)
GB (1) GB1553311A (en)
SE (1) SE420132B (en)
SU (1) SU847946A3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113624589A (en) * 2021-08-16 2021-11-09 沭阳县润丰木业制品厂 Intelligence timber measurement support

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4343179A (en) * 1979-11-27 1982-08-10 Astroem Goeta L Utility pole hardness tester
DE3501841C2 (en) * 1985-01-22 1994-04-14 Kamm Willibald F G Dipl Ing Method and device for determining the internal condition of trees or wooden components
JPS61186541A (en) * 1985-02-08 1986-08-20 村田機械株式会社 Spun yarn
JPS63192476U (en) * 1987-05-28 1988-12-12
US5099682A (en) * 1990-03-12 1992-03-31 Denomme Catherine E Meat doneness tester
FR2707759B1 (en) * 1993-07-13 1995-09-01 Sandoz Jean Luc Method and apparatus for monitoring the state of deterioration of wooden structures, in particular posts.
DE69621281T2 (en) * 1995-02-28 2002-12-05 Nippon Catalytic Chem Ind Acrylic acid derivatives, process for the production of acrylic acid derivatives and acrylic acid polymers
JP2010271112A (en) * 2009-05-20 2010-12-02 Yoshihisa Fujii Method for evaluating strength of wood and woody material
US8210024B2 (en) * 2009-10-16 2012-07-03 The Boeing Company Damage impactor
DE102011018971A1 (en) * 2011-04-28 2012-10-31 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Device for determining transverse tensile strength of timber material product e.g. oriented strand board-plate, has energy storage loading penetrator with force, and display device displaying penetration depth of penetrator into product
DE102011107899A1 (en) * 2011-07-18 2013-01-24 Carl Scholl Gmbh Method for classification of round timber with wood moisture measuring device for masts, particularly for line construction, involves introducing pin, particularly metal pin with predetermined penetration depth into round timber
ES2606331B2 (en) * 2016-11-15 2017-07-25 Universidad Politécnica de Madrid Portable machine and procedure to perform soft impact tests, with large load application area, on fragile materials

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1708262A (en) * 1927-02-25 1929-04-09 Executor Lou Bradshaw Hardness-testing device
GB1092038A (en) * 1965-05-05 1967-11-22 Zavoid Za Str Konstrukzii Improved non-destructive hardness testing device
US3421364A (en) * 1965-08-04 1969-01-14 Gkn Group Services Ltd Methods of and apparatus for measuring the hardness of materials

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113624589A (en) * 2021-08-16 2021-11-09 沭阳县润丰木业制品厂 Intelligence timber measurement support

Also Published As

Publication number Publication date
JPS5917778B2 (en) 1984-04-23
FR2323140B1 (en) 1982-11-19
SU847946A3 (en) 1981-07-15
CA1076388A (en) 1980-04-29
DK394375A (en) 1977-03-04
JPS5230489A (en) 1977-03-08
DK138862B (en) 1978-11-06
DK138862C (en) 1979-04-23
GB1553311A (en) 1979-09-26
DE2638261C2 (en) 1987-09-03
ES451200A1 (en) 1977-09-16
FR2323140A1 (en) 1977-04-01
DE2638261A1 (en) 1977-03-10
SE420132B (en) 1981-09-14

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