BR0005660A - Processo para medir por ultra-sons a tensão redisual de uma barra de pré-esforço - Google Patents
Processo para medir por ultra-sons a tensão redisual de uma barra de pré-esforçoInfo
- Publication number
- BR0005660A BR0005660A BR0005660-0A BR0005660A BR0005660A BR 0005660 A BR0005660 A BR 0005660A BR 0005660 A BR0005660 A BR 0005660A BR 0005660 A BR0005660 A BR 0005660A
- Authority
- BR
- Brazil
- Prior art keywords
- bar
- curve
- constant
- measured
- redisual
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/24—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
- G01L5/246—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed using acoustic waves
-
- 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
- G01N2291/028—Material parameters
- G01N2291/02827—Elastic parameters, strength or force
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
Patente de Invenção: <B>"PROCESSO PARA MEDIR POR ULTRA-SONS A TENSãO REDISUAL DE UMA BARRA DE PRé-ESFORçO"<D>. Para medir in situ a tensão residual F~ 1~ de uma barra de pré-esforço estendida entre duas ancoragens, mede-se o tempo de ida e volta T~ 1~ de uma onda ultra-sónica entre as duas extremidades da barra, e avalia-se F~ 1~ através da fórmula F~ 1~ = F~ 0~ + k~ b~.(T~ 1~ - T~ 0~). Por ocasião de uma aferição prévia efetuada sem desmonte submete-se a barra a um esforço de tração variável F, mede-se para cada valor o tempo de ida e volta T de uma onda ultra-sónica entre as duas extremidades da barra, registra-se uma curva (C) que associa o esforço F com o tempo T, determina-se a constante T~ 0~ como sendo o tempo de ida e volta T medido para F = 0, aproxima-se a curva, próximo do valor F = 0, por uma primeira reta (D~ 1~) de inclinação k~ a~, aproxima-se uma porção superior da curva por uma segunda reta (D~ 2~) de inclinação k~ L~, determina-se a constante F~ 0~ como sendo o esforço de tração F que corresponde ao ponto de interseção das primeira e segunda retas, e determina-se a constante k~ b~ de acordo com a relação 1/k~ b~ = (1/k~ L~) - (1/k~ a~).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9914989A FR2801670B1 (fr) | 1999-11-29 | 1999-11-29 | Procede pour mesurer par ultrason la tension residuelle d'une barre de precontrainte |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BR0005660A true BR0005660A (pt) | 2001-07-17 |
Family
ID=9552644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR0005660-0A BR0005660A (pt) | 1999-11-29 | 2000-11-29 | Processo para medir por ultra-sons a tensão redisual de uma barra de pré-esforço |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US6327912B2 (pt) |
| EP (1) | EP1103802B1 (pt) |
| JP (1) | JP3689636B2 (pt) |
| KR (1) | KR100512608B1 (pt) |
| AU (1) | AU771417B2 (pt) |
| BR (1) | BR0005660A (pt) |
| CA (1) | CA2326648C (pt) |
| FR (1) | FR2801670B1 (pt) |
| HK (1) | HK1039368A1 (pt) |
| NO (1) | NO20005748L (pt) |
| PL (1) | PL198451B1 (pt) |
| SG (1) | SG90202A1 (pt) |
| TR (1) | TR200003519A3 (pt) |
| ZA (1) | ZA200006945B (pt) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2756916B1 (fr) * | 1996-12-06 | 1999-02-12 | Eurocopter France | Appareil de mesure d'un jeu entre deux pieces |
| WO2003106992A2 (en) * | 2002-06-17 | 2003-12-24 | Swagelok Company | Ultrasonic testing of fitting assembly |
| JP4205051B2 (ja) | 2004-12-21 | 2009-01-07 | 仙之助 高橋 | 応力測定方法およびその装置 |
| US8348628B2 (en) * | 2006-08-15 | 2013-01-08 | General Electric Company | System and method for monitoring a reciprocating compressor |
| DE102007007333A1 (de) * | 2007-02-14 | 2008-08-21 | Wacker Chemie Ag | Verfahren zur Reinigung von L-Cystein |
| GB0815038D0 (en) * | 2008-08-18 | 2008-09-24 | Seaman Peter | Improvements in or relating to analysing structual memebers |
| CN103528720B (zh) * | 2013-10-25 | 2015-04-01 | 交通运输部公路科学研究所 | 体外预应力钢束应力精确检测装置及方法 |
| CN106770660A (zh) * | 2017-01-20 | 2017-05-31 | 桂林电子科技大学 | 一种高精度的应力波信号采集方法及设备 |
| CN106813819B (zh) * | 2017-04-05 | 2019-06-25 | 西南交通大学 | 一种超声波法测量曲面工件残余应力的方法 |
| CN109029840B (zh) * | 2018-09-03 | 2020-11-06 | 杭州戬威机电科技有限公司 | 一种炸药残余应力超声检测法声弹系数标定方法 |
| CN109186842A (zh) * | 2018-10-17 | 2019-01-11 | 成都众柴科技有限公司 | 一种基于磁弹效应的钢缆索应力测量方法 |
| CN111982677B (zh) * | 2020-08-03 | 2022-05-10 | 重庆大学 | 一种预应力混凝土框架结构初始有效预压力现场检测方法 |
| CN112683425A (zh) * | 2021-01-21 | 2021-04-20 | 交通运输部公路科学研究所 | 一种桥梁体内纵向预应力筋有效应力的检测方法 |
| CN114319880B (zh) * | 2022-03-07 | 2022-05-27 | 四川交达预应力工程检测科技有限公司 | 预应力张拉限位装置的限位空间的确定方法及系统 |
| CN114323389B (zh) * | 2022-03-14 | 2022-05-17 | 四川交达预应力工程检测科技有限公司 | 预应力检测方法、不分级快速连续张拉方法及系统 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2750498A (en) * | 1952-07-05 | 1956-06-12 | Rca Corp | Synchronization of television deflection systems |
| US4143518A (en) * | 1976-10-19 | 1979-03-13 | Kellogg Smith Ogden | Internal combustion and steam engine |
| US4333351A (en) * | 1980-02-25 | 1982-06-08 | Raymond Engineering Inc. | Method and apparatus for measuring the residual tension in a stud or a bolt |
| US4485677A (en) * | 1981-06-09 | 1984-12-04 | Freyssinet International (Stup) | Device for tensioning pre-stress bars and for determining this tension |
| FR2507232A1 (fr) * | 1981-06-09 | 1982-12-10 | Freyssinet Int Stup | Dispositif de mise en tension de barres de precontrainte et de determination de cette tension |
| US4413518A (en) * | 1981-07-20 | 1983-11-08 | Ndt Instruments, Inc. | Apparatus and method for measuring the extension of bolts under stress |
| US4899591A (en) * | 1987-09-11 | 1990-02-13 | Sps Technologies, Inc. | Ultrasonic load indicating member, apparatus and method |
| US5220839A (en) * | 1990-08-27 | 1993-06-22 | Ultrafast, Inc. | Ultrasonic load measuring device with control feature |
| US5461923A (en) * | 1994-05-16 | 1995-10-31 | Raymond Engineering Inc. | Acoustic transducer, transducerized fastener and method of manufacture |
| SE507466C2 (sv) * | 1995-09-22 | 1998-06-08 | Atlas Copco Controls Ab | Metod för bestämning av axialkraften i en långsträckt kropp |
| FR2750498B1 (fr) * | 1996-07-01 | 1998-09-04 | Freyssinet Int Stup | Procede pour mesurer par ultrasons la tension residuelle d'une barre de precontrainte metallique |
-
1999
- 1999-11-29 FR FR9914989A patent/FR2801670B1/fr not_active Expired - Fee Related
-
2000
- 2000-11-10 EP EP00403133A patent/EP1103802B1/fr not_active Expired - Lifetime
- 2000-11-14 NO NO20005748A patent/NO20005748L/no not_active Application Discontinuation
- 2000-11-16 SG SG200006844A patent/SG90202A1/en unknown
- 2000-11-22 CA CA002326648A patent/CA2326648C/fr not_active Expired - Lifetime
- 2000-11-24 KR KR10-2000-0070324A patent/KR100512608B1/ko active IP Right Grant
- 2000-11-27 ZA ZA200006945A patent/ZA200006945B/xx unknown
- 2000-11-28 JP JP2000361443A patent/JP3689636B2/ja not_active Expired - Lifetime
- 2000-11-28 TR TR2000/03519A patent/TR200003519A3/tr unknown
- 2000-11-29 US US09/725,747 patent/US6327912B2/en not_active Expired - Lifetime
- 2000-11-29 BR BR0005660-0A patent/BR0005660A/pt not_active Application Discontinuation
- 2000-11-29 PL PL344177A patent/PL198451B1/pl not_active IP Right Cessation
- 2000-11-29 AU AU71894/00A patent/AU771417B2/en not_active Expired
-
2001
- 2001-11-27 HK HK01108331A patent/HK1039368A1/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EP1103802A1 (fr) | 2001-05-30 |
| AU771417B2 (en) | 2004-03-18 |
| SG90202A1 (en) | 2002-07-23 |
| JP2001174344A (ja) | 2001-06-29 |
| PL198451B1 (pl) | 2008-06-30 |
| AU7189400A (en) | 2001-05-31 |
| US6327912B2 (en) | 2001-12-11 |
| PL344177A1 (en) | 2001-06-04 |
| NO20005748L (no) | 2001-05-30 |
| TR200003519A2 (tr) | 2001-06-21 |
| EP1103802B1 (fr) | 2006-02-08 |
| KR20010051933A (ko) | 2001-06-25 |
| US20010001929A1 (en) | 2001-05-31 |
| KR100512608B1 (ko) | 2005-09-06 |
| ZA200006945B (en) | 2001-05-28 |
| FR2801670A1 (fr) | 2001-06-01 |
| CA2326648A1 (fr) | 2001-05-29 |
| TR200003519A3 (tr) | 2001-06-21 |
| HK1039368A1 (en) | 2002-04-19 |
| CA2326648C (fr) | 2005-01-18 |
| FR2801670B1 (fr) | 2002-02-01 |
| JP3689636B2 (ja) | 2005-08-31 |
| NO20005748D0 (no) | 2000-11-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B11A | Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing | ||
| B11Y | Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette] |