DE69734106T2 - Verfahren und anordnung zur zerstörungsfreien klassifikation - Google Patents
Verfahren und anordnung zur zerstörungsfreien klassifikation Download PDFInfo
- Publication number
- DE69734106T2 DE69734106T2 DE69734106T DE69734106T DE69734106T2 DE 69734106 T2 DE69734106 T2 DE 69734106T2 DE 69734106 T DE69734106 T DE 69734106T DE 69734106 T DE69734106 T DE 69734106T DE 69734106 T2 DE69734106 T2 DE 69734106T2
- Authority
- DE
- Germany
- Prior art keywords
- vibration
- wood
- vibrations
- determination
- resonance frequencies
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 47
- 238000012360 testing method Methods 0.000 claims abstract description 19
- 230000010355 oscillation Effects 0.000 claims description 18
- 238000005452 bending Methods 0.000 claims description 15
- 238000005259 measurement Methods 0.000 claims description 13
- 238000012545 processing Methods 0.000 claims description 8
- 238000001228 spectrum Methods 0.000 claims description 7
- 230000001066 destructive effect Effects 0.000 claims description 6
- 238000012935 Averaging Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims description 2
- 238000012512 characterization method Methods 0.000 claims description 2
- 230000005284 excitation Effects 0.000 claims description 2
- 230000004044 response Effects 0.000 claims description 2
- 230000009466 transformation Effects 0.000 claims description 2
- 238000009826 distribution Methods 0.000 claims 3
- 238000010521 absorption reaction Methods 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 claims 1
- 230000035939 shock Effects 0.000 claims 1
- 230000001131 transforming effect Effects 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 6
- 239000002023 wood Substances 0.000 description 95
- 238000005516 engineering process Methods 0.000 description 10
- 238000011156 evaluation Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 235000004443 Ricinus communis Nutrition 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 210000001015 abdomen Anatomy 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000012372 quality testing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002889 sympathetic effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/307—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated by a compressed or tensile-stressed spring; generated by pneumatic or hydraulic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/045—Analysing solids by imparting shocks to the workpiece and detecting the vibrations or the acoustic waves caused by the shocks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/46—Wood
-
- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0617—Electrical or magnetic indicating, recording or sensing means
- G01N2203/0623—Electrical or magnetic indicating, recording or sensing means using piezoelectric gauges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/01—Indexing codes associated with the measuring variable
- G01N2291/014—Resonance or resonant frequency
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
- G01N2291/0238—Wood
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/04—Wave modes and trajectories
- G01N2291/042—Wave modes
- G01N2291/0427—Flexural waves, plate waves, e.g. Lamb waves, tuning fork, cantilever
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/26—Scanned objects
- G01N2291/262—Linear objects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/26—Scanned objects
- G01N2291/263—Surfaces
- G01N2291/2632—Surfaces flat
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Wood Science & Technology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9602374A SE511602C2 (sv) | 1996-06-17 | 1996-06-17 | Förfarande jämte anordning för oförstörande klassificering av företrädesvis långsträckta och/eller skivformade objekt |
| SE9602374 | 1996-06-17 | ||
| PCT/SE1997/001090 WO1998001737A1 (en) | 1996-06-17 | 1997-06-17 | Method and arrangement for nondestructive classification |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE69734106D1 DE69734106D1 (de) | 2005-10-06 |
| DE69734106T2 true DE69734106T2 (de) | 2006-03-16 |
Family
ID=20403025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE69734106T Expired - Lifetime DE69734106T2 (de) | 1996-06-17 | 1997-06-17 | Verfahren und anordnung zur zerstörungsfreien klassifikation |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US6347542B1 (enExample) |
| EP (1) | EP0906560B1 (enExample) |
| JP (1) | JP4074664B2 (enExample) |
| AT (1) | ATE303588T1 (enExample) |
| AU (1) | AU720772B2 (enExample) |
| CA (1) | CA2258514C (enExample) |
| DE (1) | DE69734106T2 (enExample) |
| NZ (1) | NZ333450A (enExample) |
| SE (1) | SE511602C2 (enExample) |
| WO (1) | WO1998001737A1 (enExample) |
Families Citing this family (36)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6026689A (en) * | 1998-02-25 | 2000-02-22 | Weyerhaeuser Company | Log cutting optimization system |
| US6769306B2 (en) | 1998-12-17 | 2004-08-03 | Carter Holt Harvey Limited | Log cutting procedures |
| NZ333434A (en) * | 1998-12-17 | 1999-10-28 | Carter Holt Harvey Ltd | Determining log length by passing ultrasonic signal through log, and using length information to determining cut positions |
| JP2002544481A (ja) * | 1999-05-11 | 2002-12-24 | リン、フランク | 材料検査デバイス |
| EP1208375A4 (en) * | 1999-07-30 | 2007-04-18 | Fibre Gen Instr Ltd | DEVICE FOR CHECKING TREE BARS |
| NZ503953A (en) * | 2000-04-12 | 2002-12-20 | Carter Holt Harvey Ltd | Apparatus and method for estimating timber stiffness profiles of a log by determining the density profile of a cant |
| NZ505896A (en) * | 2000-07-21 | 2003-05-30 | Ind Res Ltd | Method and apparatus for assessing or predicting characteristics of wood or other materials by varying frequency of acoustic transmitter and sensing a response |
| US6507798B1 (en) * | 2000-10-12 | 2003-01-14 | The United States Of America As Represented By The Secretary Of The Navy | Time-frequency dependent damping via Hilbert damping spectrum |
| FR2820204B1 (fr) * | 2001-01-29 | 2005-02-25 | Casagrande Stephanie Delph Bos | Procede d'evaluation et de controle non destructif de la qualite de panneaux |
| US7043990B2 (en) * | 2001-01-31 | 2006-05-16 | Board Of Control Of Michigan Technological University | System for and method of performing evaluation techniques on a log or round timber |
| TW509782B (en) * | 2001-11-20 | 2002-11-11 | Taiwan Forestry Res Inst | Nondestructive testing technique for wood stress wave |
| TWI225152B (en) * | 2003-01-29 | 2004-12-11 | Taiwan Forestry Res Inst | Method for non-destructive stress wave testing of wood |
| US20040173031A1 (en) * | 2003-03-06 | 2004-09-09 | Shlomo Gicza | Mass flow measurement |
| GB2403338B (en) * | 2003-06-24 | 2005-11-23 | Aicom Ltd | Resonance and/or vibration measurement device |
| US7066007B2 (en) * | 2003-10-17 | 2006-06-27 | Eyerhaeuser Company | Systems and methods for predicting the bending stiffness of wood products |
| US6990436B1 (en) * | 2003-11-28 | 2006-01-24 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Computing frequency by using generalized zero-crossing applied to intrinsic mode functions |
| EP2104154B1 (en) * | 2004-04-27 | 2015-06-03 | NGK Insulators, Ltd. | Piezoelectric/electrostrictive actuator inspection method and amount of displacement prediction program |
| NZ536818A (en) * | 2004-11-24 | 2007-05-31 | Carter Holt Harvey Ltd | Tree stem or log appraising apparatus |
| EP1910820A1 (en) * | 2005-07-15 | 2008-04-16 | A-Sort AB | Means and method for classifying logs |
| US7430914B2 (en) * | 2005-09-16 | 2008-10-07 | Mitsui Babcock (Us) Llc | Vibration analyzing device |
| US7676953B2 (en) * | 2006-12-29 | 2010-03-16 | Signature Control Systems, Inc. | Calibration and metering methods for wood kiln moisture measurement |
| US20080295602A1 (en) * | 2007-06-01 | 2008-12-04 | Gavin Wallace | Method and System for Sorting Green Lumber |
| JP4875589B2 (ja) * | 2007-11-01 | 2012-02-15 | 本田技研工業株式会社 | パネルの検査装置及び検査方法 |
| US8204698B2 (en) * | 2009-08-20 | 2012-06-19 | United States Gypsum Company | Method for determining structural parameters of composite building panels |
| US8566041B2 (en) * | 2009-08-20 | 2013-10-22 | United States Gypsum Company | Method for determining structural parameters of composite building panels |
| IT1398908B1 (it) * | 2010-03-03 | 2013-03-21 | Microtec Srl | Metodo ed apparecchiatura per la determinazione della frequenza propria di tavole di legno |
| US9068902B2 (en) * | 2011-05-13 | 2015-06-30 | Fisher Controls International Llc | Methods and apparatus for evaluating vibration resistance of a component of a fluid control valve |
| CA2890124C (en) * | 2012-11-01 | 2021-06-15 | Sp Sveriges Tekniska Forskningsinstitut Ab | Method and system for automatic determination of timber quality in frozen or unfrozen condition |
| US9134212B2 (en) * | 2013-07-08 | 2015-09-15 | The Boeing Company | Modal impact testing assembly, system and method |
| US9383341B2 (en) * | 2013-10-29 | 2016-07-05 | Metriguard Inc. | Sonic lumber tester |
| JP7295242B2 (ja) | 2018-12-21 | 2023-06-20 | テーエムデー フリクション サービシス ゲーエムベーハー | 試験対象物の機械的特性を求めるための装置及び方法 |
| WO2020153848A1 (en) * | 2019-01-25 | 2020-07-30 | Brookhuis Applied Technologies B.V. | Automated grading of elongated wooden objects |
| CN109682458B (zh) * | 2019-03-05 | 2024-05-10 | 重庆克来智能科技有限公司 | 一种检测机床及其用于检测零件固有频率的装置 |
| WO2021178453A1 (en) * | 2020-03-02 | 2021-09-10 | Usnr, Llc | Acoustic evaluation of wood properties |
| EP4227662A1 (en) * | 2022-02-14 | 2023-08-16 | GrindoSonic BV | Improved positioning table for impact excitation measurements |
| FR3136857A1 (fr) * | 2022-06-16 | 2023-12-22 | Safran Ceramics | Procede de mesure du module de rigidite axial d’une eprouvette en materiau composite a matrice ceramique |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2102614A (en) | 1935-09-20 | 1937-12-21 | Howard H Couch | Method of producing and distinguishing frequency vibrations |
| US2486984A (en) | 1943-05-07 | 1949-11-01 | Carborundum Co | Vibration apparatus for testing articles |
| CA918286A (en) | 1968-09-13 | 1973-01-02 | Washington State University Research Foundation | Non-destructive method of grading wood materials |
| US4399701A (en) * | 1980-06-03 | 1983-08-23 | Unisearch Limited | Method and means for detecting decay in wood |
| US4446733A (en) | 1981-08-17 | 1984-05-08 | Design Professionals Financial Corporation | Stress control in solid materials |
| US4926691A (en) * | 1986-03-11 | 1990-05-22 | Powertech Labs, Inc. | Apparatus and method for testing wooden poles |
| US4722223A (en) * | 1986-05-06 | 1988-02-02 | Her Majesty The Queen In Right Of The Province Of Alberta, As Represented By The Minister Of Energy & Natural Resources | Transverse vibration apparatus for grading wood panels |
| GB8622731D0 (en) * | 1986-09-20 | 1986-10-29 | Bio Kil Chemicals Ltd | Testing timbers |
| US4852029A (en) * | 1987-06-17 | 1989-07-25 | Accu-Tech Incorporated | Automated material classification apparatus and method |
| CA1322282C (en) * | 1989-09-29 | 1993-09-21 | Wing-Cheong Lau | Non-destructive method and apparatus for checking the quality of manufactured wood panels |
| US5207100A (en) | 1991-07-25 | 1993-05-04 | The United States Of America As Represented By The Secretary Of The Navy | Method and device for measuring underwater vehicle hull vibration |
| US5255565A (en) | 1991-11-12 | 1993-10-26 | Vibra-Metrics, Inc. | Method and apparatus for monitoring multiple points on a vibrating structure |
| US5533399A (en) * | 1992-09-30 | 1996-07-09 | Wayne State University | Method and apparatus for non-destructive measurement of elastic properties of structural materials |
| EP0599601A3 (en) * | 1992-11-23 | 1995-07-19 | British Aerospace | Swingplate analysis. |
| DE9315506U1 (de) * | 1993-10-13 | 1993-12-02 | Fagus-Grecon Greten Gmbh & Co Kg, 31061 Alfeld | Vorrichtung zur maschinellen Festigkeitssortierung von Schnittholz |
| US5520052A (en) * | 1994-02-10 | 1996-05-28 | The United States Of America As Represented By The United States Department Of Energy | Method and apparatus for determining material structural integrity |
| DE4427692A1 (de) * | 1994-08-04 | 1996-02-08 | Bayerische Motoren Werke Ag | Verfahren zum Bestimmen des Schwingungsverhaltens eines Körpers |
| US5621172A (en) * | 1995-04-03 | 1997-04-15 | State Of Oregon Acting By And Through The State Board Of Higher Education On Behalf Of Oregon State University | Method and apparatus for testing material strengths |
-
1996
- 1996-06-17 SE SE9602374A patent/SE511602C2/sv not_active IP Right Cessation
-
1997
- 1997-06-17 WO PCT/SE1997/001090 patent/WO1998001737A1/en not_active Ceased
- 1997-06-17 AT AT97928616T patent/ATE303588T1/de active
- 1997-06-17 AU AU32824/97A patent/AU720772B2/en not_active Ceased
- 1997-06-17 JP JP50365198A patent/JP4074664B2/ja not_active Expired - Fee Related
- 1997-06-17 CA CA002258514A patent/CA2258514C/en not_active Expired - Lifetime
- 1997-06-17 US US09/202,535 patent/US6347542B1/en not_active Expired - Lifetime
- 1997-06-17 EP EP97928616A patent/EP0906560B1/en not_active Expired - Lifetime
- 1997-06-17 DE DE69734106T patent/DE69734106T2/de not_active Expired - Lifetime
- 1997-06-17 NZ NZ333450A patent/NZ333450A/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| SE9602374L (sv) | 1997-12-18 |
| ATE303588T1 (de) | 2005-09-15 |
| SE9602374D0 (sv) | 1996-06-17 |
| CA2258514A1 (en) | 1998-01-15 |
| NZ333450A (en) | 2002-11-26 |
| EP0906560B1 (en) | 2005-08-31 |
| EP0906560A1 (en) | 1999-04-07 |
| DE69734106D1 (de) | 2005-10-06 |
| WO1998001737A1 (en) | 1998-01-15 |
| JP4074664B2 (ja) | 2008-04-09 |
| AU3282497A (en) | 1998-02-02 |
| AU720772B2 (en) | 2000-06-08 |
| US6347542B1 (en) | 2002-02-19 |
| JP2002511921A (ja) | 2002-04-16 |
| CA2258514C (en) | 2005-03-29 |
| SE511602C2 (sv) | 1999-10-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8364 | No opposition during term of opposition |