共找到 20 條與 應(yīng)變儀、鑄造儀器、動(dòng)力測試儀器 相關(guān)的標(biāo)準(zhǔn),共 2 頁
Technical requirements for dynamic pressure air bearing shafting stiffness measuring instrument
本標(biāo)準(zhǔn)規(guī)定了土木工程用光纖光柵應(yīng)變傳感器(以下簡稱傳感器)的術(shù)語和定義、產(chǎn)品結(jié)構(gòu)、產(chǎn)品分類及型號(hào)命名、產(chǎn)品參數(shù)、要求、試驗(yàn)方法、檢驗(yàn)規(guī)則、標(biāo)志、包裝、運(yùn)輸和貯存。本標(biāo)準(zhǔn)適用于土木工程用光纖光柵應(yīng)變傳感器的生產(chǎn)、使用和檢測。
Optical fiber grating strain sensor for civil engineering
本標(biāo)準(zhǔn)規(guī)定了可用于土石壩安全監(jiān)測的儀器系列,不包括地震、水力學(xué)和環(huán)境監(jiān)測儀器。 本標(biāo)準(zhǔn)適用于土石壩的安全監(jiān)測,其他巖土工程可參照選用。
The series and type spectrum of monitoring instrument for earth-rockfill dams
本標(biāo)準(zhǔn)規(guī)定了適用于混凝土壩及其附屬建筑物監(jiān)測的儀器系列及其基本分類、主要技術(shù)參數(shù)。其他巖土工程可參照選用。 本標(biāo)準(zhǔn)適用于混凝土壩監(jiān)測儀器產(chǎn)品的研發(fā)、設(shè)計(jì)、制造、試驗(yàn)測試及選用等各個(gè)方面。 本標(biāo)準(zhǔn)系列型譜中不包括環(huán)境量、水力學(xué)和動(dòng)態(tài)(地震)監(jiān)測儀器。
The series and type spectrum of concrete dam monitoring instrument
Strain gages are the most widely used devices for measuring strains and for evaluating stresses in structures. In many applications there are often cyclic loads which can cause strain gage failure. Performance parameters of strain gages are affected by both the materials from which they are made and their geometric design. The determination of most strain gage parameters requires mechanical testing that is destructive. Since gages tested for fatigue life cannot be used again, it is necessary to treat data statistically. In general, longer and wider gages with lower resistances will have greater fatigue life. Optional additions to gages (integral leads are an example) will often reduce fatigue life. To be used, strain gages must be bonded to a structure. Good results, particularly in a fatigue environment, depend heavily on the materials used to clean the bonding surface, to bond the gage, and to provide a protective coating. Skill of the installer is another major factor in success. Finally, instrumentation systems must be carefully selected and calibrated to ensure that they do not unduly degrade the performance of the gages. This test method encompasses only fully reversed strain cycles. Fatigue failure of a strain gage may not involve visible cracking or fracture of the gage, but merely sufficient zero shift to compromise the accuracy of the gage output for static strain components.1.1 This test method covers a uniform procedure for the determination of strain gage fatigue life at ambient temperature. A suggested testing equipment design is included. 1.2 This test method does not apply to force transducers or extensometers that use bonded resistance strain gages as sensing elements. 1.3 Strain gages are part of a complex system that includes structure, adhesive, gage, leadwires, instrumentation, and (often) environmental protection. As a result, many things affect the performance of strain gages, including user technique. A further complication is that strain gages, once installed, normally cannot be reinstalled in another location. Therefore, it is not possible to calibrate individual strain gages; performance characteristics are normally presented on a statistical basis. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to its use.
Standard Test Method for Ambient Temperature Fatigue Life of Metallic Bonded Resistance Strain Gages
本標(biāo)準(zhǔn)規(guī)定了發(fā)動(dòng)機(jī)綜合測試臺(tái)的技術(shù)要求、試驗(yàn)方法、檢驗(yàn)規(guī)則、標(biāo)志、包裝及運(yùn)輸儲(chǔ)存。 本標(biāo)準(zhǔn)適用于發(fā)動(dòng)機(jī)綜合測試臺(tái)。
Technical conditions for engine comprehensive test bench
本標(biāo)準(zhǔn)規(guī)定了電渦流測功機(jī)(器)的技術(shù)要求、試驗(yàn)方法、檢驗(yàn)規(guī)則與標(biāo)志、包裝、運(yùn)輸、貯存。 本標(biāo)準(zhǔn)適用于感應(yīng)子式電渦流測功機(jī)(器)的設(shè)計(jì)、制造、使用和修理。
Electric eddy current dynamometer - Technical specifications
Die-casting technique parameter tester
本標(biāo)準(zhǔn)規(guī)定了轉(zhuǎn)矩轉(zhuǎn)速測量儀的基本參數(shù)、技術(shù)要求、試驗(yàn)方法、檢驗(yàn)規(guī)則、標(biāo)志、包裝與貯存。 本標(biāo)準(zhǔn)適用于相位差式轉(zhuǎn)矩轉(zhuǎn)速測量儀。
Torque-speed measuring instrument
本標(biāo)準(zhǔn)規(guī)定了轉(zhuǎn)矩轉(zhuǎn)速傳感器的基本參數(shù)、技術(shù)要求、試驗(yàn)方法、檢驗(yàn)規(guī)則、標(biāo)志、包裝和儲(chǔ)存。 本標(biāo)準(zhǔn)適用于磁電相位差式轉(zhuǎn)矩轉(zhuǎn)速傳感器。
Torque-speed transducer
Methods and procedures used in installing bonded resistance strain gages can have significant effects upon the performance of those sensors. Optimum and reproducible detection of surface deformation requires appropriate and consistent surface preparation, mounting procedures, and verification techniques.1.1 This guide provides guidelines for installing bonded resistance strain gages. It is not intended to be used for bulk or diffused semiconductor gages. This document pertains only to adhesively bonded strain gages. 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Standard Guide for Installing Bonded Resistance Strain Gages
Methods and procedures used in installing bonded resistance strain gages can have significant effects upon the performance of those sensors. Optimum and reproducible detection of surface deformation requires appropriate and consistent surface preparation, mounting procedures, and verification techniques.1.1 This document provides guidelines for installing bonded resistance strain gages. It is not intended to be used for bulk or diffused semiconductor gages. This document pertains only to adhesively bonded strain gages. 1.2 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Standard Guide for Installing Bonded Resistance Strain Gages
本標(biāo)準(zhǔn)規(guī)定了電阻應(yīng)變儀的技術(shù)要求、試驗(yàn)方法、檢驗(yàn)規(guī)則、標(biāo)志、包裝與貯存等要求。 本標(biāo)準(zhǔn)適用于電阻應(yīng)變計(jì)作為傳感元件測量應(yīng)變或其它物理參數(shù)的電阻應(yīng)變儀。
Specification for resistance strain gauge
本標(biāo)準(zhǔn)規(guī)定了容積法油耗量裝置基本參數(shù),技術(shù)要求,試驗(yàn)方法,檢驗(yàn)規(guī)則與標(biāo)志、包裝、貯存。 本標(biāo)準(zhǔn)適用于容積法油耗量裝置(包括玻泡容積式油耗變送器、磁電式轉(zhuǎn)速傳感器、油耗轉(zhuǎn)速測量儀)的生產(chǎn)。
Volumetric fuel consumption meter
本標(biāo)準(zhǔn)規(guī)定了轉(zhuǎn)矩靜校臺(tái)的基本參數(shù),技術(shù)要求,試驗(yàn)方法檢驗(yàn)規(guī)則與標(biāo)志、包裝、貯存。 本標(biāo)準(zhǔn)適用于刀口、軸承支承,單級(jí)臂桿及具有放大臂桿的靜校臺(tái)的設(shè)計(jì)、制造、使用和修理。
Specification for static torque calibration stand
Strain gages are the most widely used devices for the determination of materials, properties and for analyzing stresses in structures. However, performance parameters of strain gages are affected by both the materials from which they are made and their geometric design. These test methods detail the minimum information that must accompany strain gages if they are to be used with acceptable accuracy of measurement. Most performance parameters of strain gages require mechanical testing that is destructive. Since test gages cannot be used again, it is necessary to treat data statistically and then apply values to the remaining population from the same lot or batch. Failure to acknowledge the resulting uncertainties can have serious repercussions. Resistance measurement is non-destructive and can be made for each gage. Properly designed and manufactured strain gages, whose properties have been accurately determined and with appropriate uncertainties applied, represent powerful measurement tools. They can determine small dimensional changes in structures with excellent accuracy, far beyond that of other known devices. It is important to recognize, however, that individual strain gages cannot be calibrated. If calibration and traceability to a standard are required, strain gages should not be employed. To be used, strain gages must be bonded to a structure. Good results depend heavily on the materials used to clean the bonding surface, to bond the gage, and to provide a protective coating. Skill of the installer is another major factor in success. Finally, instrumentation systems must be carefully designed to assure that they do not unduly degrade the performance of the gages. In many cases, it is impossible to achieve this goal. If so, allowance must be made when considering accuracy of data. Test conditions can, in some instances, be so severe that error signals from strain gage systems far exceed those from the structural deformations to be measured. Great care must be exercised in documenting magnitudes of error signals so that realistic values can be placed on associated uncertainties.1.1 The purpose of this standard is to provide uniform test methods for the determination of strain gage performance characteristics. Suggested testing equipment designs are included.1.2 Test Methods E 251 describes methods and procedures for determining five strain gage parameters:SectionPart I-General Requirements7Part II-Resistance at a Reference Temperature8Part III-Gage Factor at a Reference Temperature9Part IV-Temperature Coefficient of Gage Factor10Part V-Transverse Sensitivity11Part VI-Thermal Output121.3 Strain gages are very sensitive devices with essentially infinite resolution. Their response to strain, however, is low and great care must be exercised in their use. The performance characteristics identified by these test methods must be known to an acceptable accuracy to obtain meaningful results in field applications.1.3.1 Strain gage resistance is used to balance instrumentation circuits and to provide a reference value for measurements since all data are related to a change in the gage resistance from a known reference value.1.3.2 Gage factor is the transfer function of a strain gage. It relates resistance change in the gage and strain to which it is subjected. Accuracy of strain gage data can be no better than the precision of the gage factor.1.3.3 Changes in gage factor as temperature varies also affect accuracy although to a much lesser degree since variations are usually small.1.3.4 Transverse sensitivity is a measure of the strain gage''s respons......
Standard Test Methods for Performance Characteristics of Metallic Bonded Resistance Strain Gages
Strain gauges are the most widely used devices for the determination of materials, properties and for analyzing stresses in structures. However, performance parameters of strain gauges are affected by both the materials from which they are made and their geometric design. These test methods detail the minimum information that must accompany strain gauges if they are to be used with acceptable accuracy of measurement. Most performance parameters of strain gauges require mechanical testing that is destructive. Since test gauges cannot be used again, it is necessary to treat data statistically and then apply values to the remaining population from the same lot or batch. Failure to acknowledge the resulting uncertainties can have serious repercussions. Resistance measurement is non-destructive and can be made for each gauge. Properly designed and manufactured strain gauges, whose properties have been accurately determined and with appropriate uncertainties applied, represent powerful measurement tools. They can determine small dimensional changes in structures with excellent accuracy, far beyond that of other known devices. It is important to recognize, however, that individual strain gauges cannot be calibrated. If calibration and traceability to a standard are required, strain gauges should not be employed. To be used, strain gauges must be bonded to a structure. Good results depend heavily on the materials used to clean the bonding surface, to bond the gauge, and to provide a protective coating. Skill of the installer is another major factor in success. Finally, instrumentation systems must be carefully designed to assure that they do not unduly degrade the performance of the gauges. In many cases, it is impossible to achieve this goal. If so, allowance must be made when considering accuracy of data. Test conditions can, in some instances, be so severe that error signals from strain gauge systems far exceed those from the structural deformations to be measured. Great care must be exercised in documenting magnitudes of error signals so that realistic values can be placed on associated uncertainties.1.1 The purpose of this standard is to provide uniform test methods for the determination of strain gauge performance characteristics. Suggested testing equipment designs are included. 1.2 Test Methods E 251 describes methods and procedures for determining five strain gauge parameters: Section Part I—General Requirements 7 Part II—Resistance at a Reference Temperature 8 Part III—Gauge Factor at a Reference Temperature 9 Part IV—Temperature Coefficient of Gauge Factor10 Part V—Transverse Sensitivity11 Part VI—Thermal Output12 1.3 Strain gauges are very sensitive devices with essentially infinite resolution. Their response to strain, however, is low and great care must be exercised in their use. The pe......
Standard Test Methods for Performance Characteristics of Metallic Bonded Resistance Strain Gages
本標(biāo)準(zhǔn)規(guī)定了標(biāo)準(zhǔn)扭矩儀的技術(shù)要求、試驗(yàn)方法、檢驗(yàn)規(guī)則、標(biāo)志、包裝及質(zhì)量保證期。 本標(biāo)準(zhǔn)適用于百分表作為讀數(shù)指示器的標(biāo)準(zhǔn)扭矩儀。
Standard torque dynamometer - Specification
Describes methods for calibration procedures to determine the performance characteristics of strain gauges that have metallic elements. Defines terms used, suggests forms of calibration rigs and specifies the required accuracy for instrumentation used for calibration.
Methods for calibration of bonded electrical resistance strain gauges
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