Pub Date : 1900-01-01DOI: 10.51843/wsproceedings.2013.13
Cheng-Yen Fang
Interlaboratory comparison is organization, performance and evaluation of measurements or tests on the same or similar items by two or more laboratories in accordance with predetermined conditions, which is the way to demonstrate the measurement capability of each laboratory. In order to understand the LED bulb measurement capability of each laboratory in Taiwan, CMS/ITRI held a LED bulb interlaboratory comparison scheme. This activity can help the participants to understand the differences of their measurement capabilities compared with others and then seek the solution to improve their measurement competence. This LED bulb interlaboratory comparison scheme was carried out according to ISO/IEC 17043:2010. Percent difference |D%| was chosen as the performance statistic to indicate the measurement capabilities of participants, and the measured values of National Measurement Laboratory (NML), R.O.C. were used as the assigned values. From the analysis of this LED bulb interlaboratory comparison, most of participants’ results were satisfactory, which implied that most of LED bulb test laboratories in Taiwan have good measurement competence.
{"title":"Result Summary of LED Bulb Interlaboratory Comparison in Taiwan","authors":"Cheng-Yen Fang","doi":"10.51843/wsproceedings.2013.13","DOIUrl":"https://doi.org/10.51843/wsproceedings.2013.13","url":null,"abstract":"Interlaboratory comparison is organization, performance and evaluation of measurements or tests on the same or similar items by two or more laboratories in accordance with predetermined conditions, which is the way to demonstrate the measurement capability of each laboratory. In order to understand the LED bulb measurement capability of each laboratory in Taiwan, CMS/ITRI held a LED bulb interlaboratory comparison scheme. This activity can help the participants to understand the differences of their measurement capabilities compared with others and then seek the solution to improve their measurement competence. This LED bulb interlaboratory comparison scheme was carried out according to ISO/IEC 17043:2010. Percent difference |D%| was chosen as the performance statistic to indicate the measurement capabilities of participants, and the measured values of National Measurement Laboratory (NML), R.O.C. were used as the assigned values. From the analysis of this LED bulb interlaboratory comparison, most of participants’ results were satisfactory, which implied that most of LED bulb test laboratories in Taiwan have good measurement competence.","PeriodicalId":445779,"journal":{"name":"NCSL International Workshop & Symposium Conference Proceedings 2013","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124870742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.51843/wsproceedings.2013.06
S. Echeverría-Villagómez
Metrology is an important aspect to be cared for in Small and Medium Enterprises, mainly in the field of manufacturing. A Mexican entrepreneur said that ‘metrology is in the ladder step that brings a manufacturing enterprise from the craftsmanship level to the industrial level. Beyond, metrology can be a competitive advantage of a SME for achieving higher levels of quality, productivity, competitiveness and innovation. SMEs often find it difficult to devote the necessary resources to metrology, sometimes they don't know what metrology can do for them and other times they don't know how to take an adequate strategy for this important aspect of their company. The present work is based on the experience of a number of years attending the metrological aspects of manufacturing companies with the MESURA methodology and work team. The methodology has a number of principles which include a lean approach to metrology with a fit fur purpose tactics, equilibrium among the elements of measuring systems and live integration.
{"title":"Best Practices of Metrology for Small and Medium Enterprises","authors":"S. Echeverría-Villagómez","doi":"10.51843/wsproceedings.2013.06","DOIUrl":"https://doi.org/10.51843/wsproceedings.2013.06","url":null,"abstract":"Metrology is an important aspect to be cared for in Small and Medium Enterprises, mainly in the field of manufacturing. A Mexican entrepreneur said that ‘metrology is in the ladder step that brings a manufacturing enterprise from the craftsmanship level to the industrial level. Beyond, metrology can be a competitive advantage of a SME for achieving higher levels of quality, productivity, competitiveness and innovation. SMEs often find it difficult to devote the necessary resources to metrology, sometimes they don't know what metrology can do for them and other times they don't know how to take an adequate strategy for this important aspect of their company. The present work is based on the experience of a number of years attending the metrological aspects of manufacturing companies with the MESURA methodology and work team. The methodology has a number of principles which include a lean approach to metrology with a fit fur purpose tactics, equilibrium among the elements of measuring systems and live integration.","PeriodicalId":445779,"journal":{"name":"NCSL International Workshop & Symposium Conference Proceedings 2013","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124235596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.51843/wsproceedings.2013.03
Nghiem Van Nguyen
Automation Design of Multiple Intelligent Integration System. The multiple system integrator automation (MSIA) is a business that builds computing systems based on the rapid advancement of integration automated technology for clients, by combining hardware and software products for multiple testing. The multiple system integrator automation (MSIA) could be applied to upgrade our metrology manual calibrations to be an automated system. In today's business environment, project teams are expected to do more and deliver higher quality systems in less time with fewer resources. And when companies tighten their budgetary belt, multiple system integration testing is often one of the first systems-development items to be done away within.œ Reduce cost of ownership by 45% to 60%.œ Reduce time to automate tests by 50% to 70%.Using the multiple system integrator automation (MSIA), a company can align cheaper, pre-configured components and off-the-shelf software to meet key business goals, as opposed to using more expensive, customized implementations that may require original programming or unique components. Multiple system integrator automation (MSIA) is a business that builds computing systems based on the rapid advancement of integration automated multiple testing technology.
{"title":"Automation Design of Multiple Intelligent Integration System","authors":"Nghiem Van Nguyen","doi":"10.51843/wsproceedings.2013.03","DOIUrl":"https://doi.org/10.51843/wsproceedings.2013.03","url":null,"abstract":"Automation Design of Multiple Intelligent Integration System. The multiple system integrator automation (MSIA) is a business that builds computing systems based on the rapid advancement of integration automated technology for clients, by combining hardware and software products for multiple testing. The multiple system integrator automation (MSIA) could be applied to upgrade our metrology manual calibrations to be an automated system. In today's business environment, project teams are expected to do more and deliver higher quality systems in less time with fewer resources. And when companies tighten their budgetary belt, multiple system integration testing is often one of the first systems-development items to be done away within.œ Reduce cost of ownership by 45% to 60%.œ Reduce time to automate tests by 50% to 70%.Using the multiple system integrator automation (MSIA), a company can align cheaper, pre-configured components and off-the-shelf software to meet key business goals, as opposed to using more expensive, customized implementations that may require original programming or unique components. Multiple system integrator automation (MSIA) is a business that builds computing systems based on the rapid advancement of integration automated multiple testing technology.","PeriodicalId":445779,"journal":{"name":"NCSL International Workshop & Symposium Conference Proceedings 2013","volume":"5 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120913363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.51843/wsproceedings.2013.05
S. K. Smith
Uncertainty of Angle Measurements Made with Theodolites: What ISO 17123-3 Does and Does Not Mean. The ISO 17123-3 standard is in wide use in the surveying industry. It’s used to allow customers and manufacturers to compare instruments such as theodolites, transits and total stations, according to a consensus standard with international credibility. The result of the ISO 17123-3 test is also often used in manufacturer’s spec sheets as the “Angle Accuracy” for the instruments. This however, can be easily misinterpreted as the “uncertainty of the angle measurement made with the instrument.” This is not the intent of the standard, and making this assumption will usually cause one to underestimate the measurement uncertainty.
{"title":"Uncertainty of Angle Measurements Made with Theodolites: What ISO 17123-3 and Does Not Mean","authors":"S. K. Smith","doi":"10.51843/wsproceedings.2013.05","DOIUrl":"https://doi.org/10.51843/wsproceedings.2013.05","url":null,"abstract":"Uncertainty of Angle Measurements Made with Theodolites: What ISO 17123-3 Does and Does Not Mean. The ISO 17123-3 standard is in wide use in the surveying industry. It’s used to allow customers and manufacturers to compare instruments such as theodolites, transits and total stations, according to a consensus standard with international credibility. The result of the ISO 17123-3 test is also often used in manufacturer’s spec sheets as the “Angle Accuracy” for the instruments. This however, can be easily misinterpreted as the “uncertainty of the angle measurement made with the instrument.” This is not the intent of the standard, and making this assumption will usually cause one to underestimate the measurement uncertainty.","PeriodicalId":445779,"journal":{"name":"NCSL International Workshop & Symposium Conference Proceedings 2013","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121489614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.51843/wsproceedings.2013.53
G. Mihm
Military forces need always new equipment to cope with the expected challenges they face in unknown, hostile environment. To enable unrestricted operations, military forces are also preparing to maintain this equipment (if possible) in this environment with own personal and equipment. By doing this, they have a high need of up-to-date, precise test & measurement equipment. So the existing stock of test & measurement equipment has continuously to be updated to the needs of the user. Obsolete equipment has to be scraped and replaced by new items, which fulfills the requirements. As for every new part number a specific calibration procedure is needed and the user in the field needs to be trained in the handling of the equipment, military forces are thriving for standardization and use of general purpose test & measurement equipment. For calibration of the test & measurement equipment military forces set up their own technical calibration documents (e.g. 33K100--). Inventory equipment of the calibration laboratories is also standardized to cope with the predicted workload. Thereby routine procedures can be set up to determine measurement uncertainties automatically. The presentation will cover the way to set up routine calibration of test & measurement equipment for the end user. Like every modern army the German armed forces dispose of a huge number of weapon systems and the necessary equipment for handling, repair, inspection and testing, which includes also test & measurement equipment or test systems. The equipment of the armed forces is mission-oriented - the equipment is continuously adapted to the situation to be expected in the respective place of action.
{"title":"Routine Calibration of Large Number of Test & Measurement Equipment","authors":"G. Mihm","doi":"10.51843/wsproceedings.2013.53","DOIUrl":"https://doi.org/10.51843/wsproceedings.2013.53","url":null,"abstract":"Military forces need always new equipment to cope with the expected challenges they face in unknown, hostile environment. To enable unrestricted operations, military forces are also preparing to maintain this equipment (if possible) in this environment with own personal and equipment. By doing this, they have a high need of up-to-date, precise test & measurement equipment. So the existing stock of test & measurement equipment has continuously to be updated to the needs of the user. Obsolete equipment has to be scraped and replaced by new items, which fulfills the requirements. As for every new part number a specific calibration procedure is needed and the user in the field needs to be trained in the handling of the equipment, military forces are thriving for standardization and use of general purpose test & measurement equipment. For calibration of the test & measurement equipment military forces set up their own technical calibration documents (e.g. 33K100--). Inventory equipment of the calibration laboratories is also standardized to cope with the predicted workload. Thereby routine procedures can be set up to determine measurement uncertainties automatically. The presentation will cover the way to set up routine calibration of test & measurement equipment for the end user. Like every modern army the German armed forces dispose of a huge number of weapon systems and the necessary equipment for handling, repair, inspection and testing, which includes also test & measurement equipment or test systems. The equipment of the armed forces is mission-oriented - the equipment is continuously adapted to the situation to be expected in the respective place of action.","PeriodicalId":445779,"journal":{"name":"NCSL International Workshop & Symposium Conference Proceedings 2013","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130369216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.51843/wsproceedings.2013.49
A. Jalalzadeh-Azar
Instrument response plays an important role in data validation for experimental and real-world systems, including gas turbine engines (GTE). A widely used metric for characterizing sensor response is the time constant, which is typically determined experimentally in a laboratory environment by examining the output response to a step, ramp, or sinusoidal input. Although such an approach is useful for screening and selecting appropriate sensors for an application, it is not necessarily applicable to the measurement system integrating the sensor. Gas pressure and temperature are among the thermodynamic properties whose accurate measurements are crucial to GTE performance assessments in transient as well as in steady-state operations. To evaluate the response characteristics of the respective measurement systems, implementation of a technique utilizing actual test data can complement laboratory test results that may not fully cover the operating range of interest. Subtle differences between the laboratory setup and the actual test apparatus is another factor that underscores the utility of such a hybrid approach for discerning the effective response parameters. The proposed analytical technique entails an inverse analysis requiring advance knowledge of the actual properties for discernment of the sought instrument response parameters. Therefore, forecasting the properties along the transient path becomes an intrinsic facet of the response characterization. Comparison of the results from this twofold methodology with vetted laboratory data can help modify the analytical and the laboratory techniques for convergence. The search for this coveted emergence may also constitute a viable strategy for addressing the seemingly paradoxical notion regarding the need for predictability of the properties being measured. This paper presents the conceptualized analytical methodology for determining the effective time constants of the total pressure and temperature measurement systems in a GTE compressor involving subsonic axial flow regimes. To predict the transient data, historical steady-state measurements for a wide range of engine speeds were used and correlated to the rotational speed. Although this effort does not take the center stage here, it provides a means to explore the efficacy of the proposed technique that approximates instrument parameters using first- and second-order response models for temperature and pressure, respectively.
{"title":"Analytical Evaluation of Response Characteristics of Temperature and Pressure Measurement Systems for Gas Turbine Engines","authors":"A. Jalalzadeh-Azar","doi":"10.51843/wsproceedings.2013.49","DOIUrl":"https://doi.org/10.51843/wsproceedings.2013.49","url":null,"abstract":"Instrument response plays an important role in data validation for experimental and real-world systems, including gas turbine engines (GTE). A widely used metric for characterizing sensor response is the time constant, which is typically determined experimentally in a laboratory environment by examining the output response to a step, ramp, or sinusoidal input. Although such an approach is useful for screening and selecting appropriate sensors for an application, it is not necessarily applicable to the measurement system integrating the sensor. Gas pressure and temperature are among the thermodynamic properties whose accurate measurements are crucial to GTE performance assessments in transient as well as in steady-state operations. To evaluate the response characteristics of the respective measurement systems, implementation of a technique utilizing actual test data can complement laboratory test results that may not fully cover the operating range of interest. Subtle differences between the laboratory setup and the actual test apparatus is another factor that underscores the utility of such a hybrid approach for discerning the effective response parameters. The proposed analytical technique entails an inverse analysis requiring advance knowledge of the actual properties for discernment of the sought instrument response parameters. Therefore, forecasting the properties along the transient path becomes an intrinsic facet of the response characterization. Comparison of the results from this twofold methodology with vetted laboratory data can help modify the analytical and the laboratory techniques for convergence. The search for this coveted emergence may also constitute a viable strategy for addressing the seemingly paradoxical notion regarding the need for predictability of the properties being measured. This paper presents the conceptualized analytical methodology for determining the effective time constants of the total pressure and temperature measurement systems in a GTE compressor involving subsonic axial flow regimes. To predict the transient data, historical steady-state measurements for a wide range of engine speeds were used and correlated to the rotational speed. Although this effort does not take the center stage here, it provides a means to explore the efficacy of the proposed technique that approximates instrument parameters using first- and second-order response models for temperature and pressure, respectively.","PeriodicalId":445779,"journal":{"name":"NCSL International Workshop & Symposium Conference Proceedings 2013","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128978643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.51843/wsproceedings.2013.08
Gary Bennett
How to Achieve a 0.01 ìV/V Deviation on Your 10 Vdc Proficiency Test Without Using a Josephson Array. This paper describes the steps the National Instruments Metrology Laboratory took to establish, in a short period of time, a sub ppm uncertainty 10 Vdc reference standard. One and a half years after the purchase of the 10 Vdc Zener references, the Proficiency Test (PT) reported an error of 0.01 ìV/V. The National Instruments Metrology Laboratory bought four 10 Vdc voltage reference standards in order to establish the 10 Vdc reference for the corporation and to enable the in-house artifact calibrations on calibrators. As a new laboratory, we could not benefit from historical data since our references were new. A primary goal of the project was to perform artifact calibrations one year after the purchase of our reference standards. Starting without historical data, the laboratory was able to achieve an error of 0.43 ìV/V on the first PT, just six months after the references were put into service. Why perform a PT after just six months using new voltage references? The drift of the reference standard is specified at 2.0 ìV/V for 12 months. The 10 V reference used for the artifact calibration must have an uncertainty of 1.5 ìV/V or less in order for the calibrator to meet its published specifications. A six month calibration interval for the 10 V reference allowed the uncertainty to be low enough to keep the calibrators within their specifications. This paper covers the program developed by National Instruments and the lessons learned that might help a new laboratory to make their progress quicker and cheaper. The most recent PT result is included, two and a half years after the purchase of the reference standards.
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Pub Date : 1900-01-01DOI: 10.51843/wsproceedings.2013.11
Stephen E. Pirnat
Advances in Vision Systems Will Enable Significant Improvements in Thread Metrology. Visions systems have had a profound impact on manufacturing productivity and quality over the last decade. These optical/laser-based systems will continue to enhance the speed, productivity, cost and quality within a broad range of manufacturing processes globally. “The global machine vision market is estimated at $3.1 billion in 2012, and is expected to grow with a CAGR of 8.2 percent to $5.1 billion in 2018. The major factors driving the market are paradigm shifts in the global market demand for machine vision products, emergence of smart cameras ……” according to Market and Market, a global market research and consulting company. This article is intended to increase the reader’s awareness of advances in vision systems that will impact the manufacture and inspection of thread forms and thread gage calibration. These unique systems can be found in the metrology lab, shop floor, or in the field, providing enhanced speed, productivity, quality and cost for their users. Thread forms are of particular interest and importance to metrology and manufacturing/ quality professionals since they are a fundamental component that virtually holds our manufacturing world together. Thread forms are available in a wide variety of geometric shapes and industry standards. They are a principal method of fastening manufacturing components, and they form a critical component within a variety of industries like defense/aerospace, automotive, and energy. These thread forms can be simple, or eloquently complex. Nevertheless, the accuracy of their geometric shape is critical to the quality, reliability, and safety in many applications. The traditional methods for measuring and inspecting thread forms can be slow and costly, requiring skilled, experienced personnel. Vision systems will allow greater quality surveillance, lower costs, shorter cycle times, improved reliability/safety and overall productivity. We will examine two totally different types of vision system designs to provide non-contact, high-speed measurement and/or inspection of thread forms.
视觉系统的进步将使螺纹测量得到重大改进。在过去的十年中，视觉系统对生产效率和质量产生了深远的影响。这些基于光学/激光的系统将在全球范围内广泛的制造过程中继续提高速度，生产力，成本和质量。“2012年全球机器视觉市场估计为31亿美元，预计到2018年将以8.2%的复合年增长率增长至51亿美元。全球市场研究和咨询公司market and market表示:“推动市场的主要因素是全球市场对机器视觉产品需求的范式转变，智能相机的出现......。”本文旨在提高读者对视觉系统的进步的认识，这将影响螺纹形状和螺纹量规校准的制造和检查。这些独特的系统可以在计量实验室、车间或现场找到，为用户提供更高的速度、生产力、质量和成本。螺纹形式对计量和制造/质量专业人员特别感兴趣和重要，因为它们是几乎将我们的制造业结合在一起的基本组成部分。螺纹形式有多种几何形状和工业标准可供选择。它们是紧固制造部件的主要方法，并且在国防/航空航天，汽车和能源等各种行业中形成关键部件。这些线程形式可以是简单的，也可以是复杂的。然而，在许多应用中，其几何形状的准确性对质量、可靠性和安全性至关重要。测量和检查螺纹形状的传统方法可能是缓慢和昂贵的，需要熟练，有经验的人员。视觉系统将实现更高质量的监控、更低的成本、更短的周期时间、更高的可靠性/安全性和整体生产力。我们将研究两种完全不同类型的视觉系统设计，以提供非接触式，高速测量和/或检查螺纹形状。
{"title":"Advances in Vision Systems Will Enable Significant Improvements in Thread Metrology","authors":"Stephen E. Pirnat","doi":"10.51843/wsproceedings.2013.11","DOIUrl":"https://doi.org/10.51843/wsproceedings.2013.11","url":null,"abstract":"Advances in Vision Systems Will Enable Significant Improvements in Thread Metrology. Visions systems have had a profound impact on manufacturing productivity and quality over the last decade. These optical/laser-based systems will continue to enhance the speed, productivity, cost and quality within a broad range of manufacturing processes globally. “The global machine vision market is estimated at $3.1 billion in 2012, and is expected to grow with a CAGR of 8.2 percent to $5.1 billion in 2018. The major factors driving the market are paradigm shifts in the global market demand for machine vision products, emergence of smart cameras ……” according to Market and Market, a global market research and consulting company. This article is intended to increase the reader’s awareness of advances in vision systems that will impact the manufacture and inspection of thread forms and thread gage calibration. These unique systems can be found in the metrology lab, shop floor, or in the field, providing enhanced speed, productivity, quality and cost for their users. Thread forms are of particular interest and importance to metrology and manufacturing/ quality professionals since they are a fundamental component that virtually holds our manufacturing world together. Thread forms are available in a wide variety of geometric shapes and industry standards. They are a principal method of fastening manufacturing components, and they form a critical component within a variety of industries like defense/aerospace, automotive, and energy. These thread forms can be simple, or eloquently complex. Nevertheless, the accuracy of their geometric shape is critical to the quality, reliability, and safety in many applications. The traditional methods for measuring and inspecting thread forms can be slow and costly, requiring skilled, experienced personnel. Vision systems will allow greater quality surveillance, lower costs, shorter cycle times, improved reliability/safety and overall productivity. We will examine two totally different types of vision system designs to provide non-contact, high-speed measurement and/or inspection of thread forms.","PeriodicalId":445779,"journal":{"name":"NCSL International Workshop & Symposium Conference Proceedings 2013","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128132362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.51843/wsproceedings.2013.12
Roberto Benitez Chavez
The 21st General Conference on Weights and Measures, in the 11th resolution, recommends to metrology specialists to work in adequate an international infrastructure to ensure traceability of the biotechnology measurements to the International System of Units (SI). Some countries have been working in some metrological areas, but it is necessary to coordinate that work in a global manner. This paper presents the work of a private calibration laboratory made collecting information in different applications of metrology in biotechnology and recommends establishing the term Biometrology as the measurement science for life.
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Pub Date : 1900-01-01DOI: 10.51843/wsproceedings.2013.31
J. Fuehne
The Purdue College of Technology statewide location in Columbus, Indiana has partnered with Cummins Inc. over the past several years to develop a metrology lab on the campus in Columbus. In conjunction with this effort, faculty of the Mechanical Engineering Technology program is continuing to make progress in developing an integrated curriculum to support the new lab. The curriculum is integrated since new classes and laboratory activities have been blended into the existing Bachelor of Science degree program in Mechanical Engineering Technology. Industry in the greater region surrounding Columbus is heavily weighted toward manufacturing and the metrology lab and curriculum development has received positive responses from many companies throughout the region.An existing freshman-level class has been modified, maintaining its current core learning objectives, by emphasizing the geometric dimensioning and tolerancing (GD&T) aspects of the class. Companies often use GD&T in the manufacturing of products so a good understanding of topics such as circularity, parallelism, perpendicularity, cylindricity, and runout is necessary. And these characteristics of parts can only be inspected utilizing measurement techniques developed in the metrology lab and then applied to real parts.A sophomore-level class is under development with the title of “Dimensional Metrology”. This class serves as an introduction to tools used in dimensional measurement: micrometers, vernier calipers, height gages, coordinate measurement machines, and optical methods of measurement. Other subjects introduced during the class are statistical techniques, particularly gage repeatability and reproducibility studies, calibration using gage blocks, surface measurement, measurement by comparison, and pneumatic measurement.Two upper division classes have already been developed and offered to students in the MET program. The first was “Inspection and Validation of Product Design”, and the second was titled “Measurement Systems Analysis”. The first course extended the objectives and outcomes of the freshman-level course by completing a full study of GD&T and using the CMM to investigate parallelism, perpendicularity, and flatness. The second course focuses on evaluating a measurement system using statistical methods such as gage R&R studies. A capstone metrology reverse engineering assignment completes the class.
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