After seeing a number of projects trying to help frontline workers, Josef Průša decided to produce face shields with both 3D printed and laser-cut plastic components.
{"title":"Printing for Protection","authors":"Chitra Sethi","doi":"10.1115/1.2021-jan5","DOIUrl":"https://doi.org/10.1115/1.2021-jan5","url":null,"abstract":"After seeing a number of projects trying to help frontline workers, Josef Průša decided to produce face shields with both 3D printed and laser-cut plastic components.","PeriodicalId":18406,"journal":{"name":"Mechanical Engineering","volume":"11 1","pages":"38-39"},"PeriodicalIF":1.9,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86471289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Researchers at Idaho National Laboratory have adapted digital engineering technology to help build the Department of Energy’s proposed Versatile Test Reactor (VTR). It is expected that developing VTR via digital engineering will significantly reduce risk by organizing all the project’s data and models in a centralized, interactive system that guides the complex project from inception, through design and construction, and into operations.
{"title":"Building with Digital Tools","authors":"Cory Hatch","doi":"10.1115/1.2020-oct2","DOIUrl":"https://doi.org/10.1115/1.2020-oct2","url":null,"abstract":"\u0000 Researchers at Idaho National Laboratory have adapted digital engineering technology to help build the Department of Energy’s proposed Versatile Test Reactor (VTR). It is expected that developing VTR via digital engineering will significantly reduce risk by organizing all the project’s data and models in a centralized, interactive system that guides the complex project from inception, through design and construction, and into operations.","PeriodicalId":18406,"journal":{"name":"Mechanical Engineering","volume":"21 1","pages":"32-37"},"PeriodicalIF":1.9,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82794501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
With barriers to physical interaction cropping up due to the COVID-19 pandemic, companies are turning more to digital engineering tools and the Internet of Things to assist in this critical phase of product development. Adding IoT capability—or changing the way IoT is employed—may be one way to digitize later stages of the manufacturing process.
{"title":"Heading Into the Clouds","authors":"J. Thilmany","doi":"10.1115/1.2020-oct1","DOIUrl":"https://doi.org/10.1115/1.2020-oct1","url":null,"abstract":"\u0000 With barriers to physical interaction cropping up due to the COVID-19 pandemic, companies are turning more to digital engineering tools and the Internet of Things to assist in this critical phase of product development. Adding IoT capability—or changing the way IoT is employed—may be one way to digitize later stages of the manufacturing process.","PeriodicalId":18406,"journal":{"name":"Mechanical Engineering","volume":"3 1","pages":"26-31"},"PeriodicalIF":1.9,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88454730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
There were two breakthroughs that led to a veritable revolution in photovoltaic prices. The commonly told story is that China started manufacturing lower-quality panels and dumped them on the world market at prices near (or even below) the cost of production. The truth is more complicated. Chinese manufacturing at scale played a part, but so did German industrial policy and a focus on improving the complete power system, not just the PV cells.
{"title":"The Solar Explosion","authors":"A. Basu","doi":"10.1115/1.2020-oct3","DOIUrl":"https://doi.org/10.1115/1.2020-oct3","url":null,"abstract":"\u0000 There were two breakthroughs that led to a veritable revolution in photovoltaic prices. The commonly told story is that China started manufacturing lower-quality panels and dumped them on the world market at prices near (or even below) the cost of production. The truth is more complicated. Chinese manufacturing at scale played a part, but so did German industrial policy and a focus on improving the complete power system, not just the PV cells.","PeriodicalId":18406,"journal":{"name":"Mechanical Engineering","volume":"315 1","pages":"38-43"},"PeriodicalIF":1.9,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77415188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fluid power technology uses a pump to deliver pressurized fluid to a cylinder, motor, or rotary actuator. Output speed and direction is controlled by varying flow rate from the pump or through valves within the fluid power circuit. Likewise, output force and torque are regulated by controlling pressure within the circuit. Engineers should understand what the possibility of using fluid power can bring.
{"title":"Get to Know Fluid Power Systems","authors":"A. Hitchcox","doi":"10.1115/1.2020-oct4","DOIUrl":"https://doi.org/10.1115/1.2020-oct4","url":null,"abstract":"\u0000 Fluid power technology uses a pump to deliver pressurized fluid to a cylinder, motor, or rotary actuator. Output speed and direction is controlled by varying flow rate from the pump or through valves within the fluid power circuit. Likewise, output force and torque are regulated by controlling pressure within the circuit. Engineers should understand what the possibility of using fluid power can bring.","PeriodicalId":18406,"journal":{"name":"Mechanical Engineering","volume":"8 1","pages":"44-45"},"PeriodicalIF":1.9,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85646180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The global supply chain shutdown during the pandemic put the spotlight on China, where the great bulk of the world’s goods are manufactured. The coronavirus highlighted the vulnerabilities of concentrating so much production in one place. Even though some industries are considering establishing new, domestic manufacturing plants in light of the vulnerabilities exposed during the first months of the COVID-19 crisis. The sheer size of the Chinese market, however, will keep a hold on U.S. and other manufacturers, at least for now.
{"title":"Is There an Alternative to China?","authors":"J. Kosowatz","doi":"10.1115/1.2020-sep1","DOIUrl":"https://doi.org/10.1115/1.2020-sep1","url":null,"abstract":"\u0000 The global supply chain shutdown during the pandemic put the spotlight on China, where the great bulk of the world’s goods are manufactured. The coronavirus highlighted the vulnerabilities of concentrating so much production in one place. Even though some industries are considering establishing new, domestic manufacturing plants in light of the vulnerabilities exposed during the first months of the COVID-19 crisis. The sheer size of the Chinese market, however, will keep a hold on U.S. and other manufacturers, at least for now.","PeriodicalId":18406,"journal":{"name":"Mechanical Engineering","volume":"12 1","pages":"30-35"},"PeriodicalIF":1.9,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82252028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In May and June of 2020, the editors of Mechanical Engineering magazine convened a series of talks with experts from a range of engineering disciplines to explore these issues that are at the heart of the engineering response to COVID-19. The title of that series, Rebooting After the Pandemic, may have sounded a bit premature as many American states were grappling with a rising wave of infection in June. The forward-facing focus is, however, critical. The time to prepare for the post-pandemic world is now.
{"title":"Finding a Way Forward","authors":"Jeffery Winters","doi":"10.1115/1.2020-sep2","DOIUrl":"https://doi.org/10.1115/1.2020-sep2","url":null,"abstract":"\u0000 In May and June of 2020, the editors of Mechanical Engineering magazine convened a series of talks with experts from a range of engineering disciplines to explore these issues that are at the heart of the engineering response to COVID-19. The title of that series, Rebooting After the Pandemic, may have sounded a bit premature as many American states were grappling with a rising wave of infection in June. The forward-facing focus is, however, critical. The time to prepare for the post-pandemic world is now.","PeriodicalId":18406,"journal":{"name":"Mechanical Engineering","volume":"32 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87698481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
STEM education, encompassing engineering and technology as well as science and math, was identified as a national crisis as long ago as 2005, when the National Academies of Sciences, Engineering, and Medicine published the report, Rising Above the Gathering Storm: Energizing and Employing America for a Brighter Economic Future. In 2007, Congress passed a law intended, in part, to improve STEM teaching. Fast forward to 2020 and the question is: Has the new emphasis on STEM education changed anything?
{"title":"Pathway to STEM","authors":"C. Kelly","doi":"10.1115/1.2020-sep3","DOIUrl":"https://doi.org/10.1115/1.2020-sep3","url":null,"abstract":"\u0000 STEM education, encompassing engineering and technology as well as science and math, was identified as a national crisis as long ago as 2005, when the National Academies of Sciences, Engineering, and Medicine published the report, Rising Above the Gathering Storm: Energizing and Employing America for a Brighter Economic Future. In 2007, Congress passed a law intended, in part, to improve STEM teaching. Fast forward to 2020 and the question is: Has the new emphasis on STEM education changed anything?","PeriodicalId":18406,"journal":{"name":"Mechanical Engineering","volume":"1 1","pages":"42-47"},"PeriodicalIF":1.9,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89560946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In the family of heat engines, the gas turbine is unique in that it is used to produce two different kinds of useful power. By converting combusted fuel heat into work, a gas turbine engine can produce external shaft power (e.g., to drive a connected electric generator) or jet power (e.g., as a jet engine, to produce thrust forces to propel an aircraft). This means that the gas turbine’s thermodynamic figure of merit, thermal efficiency, is multifaceted, and calls for a nuanced examination.
{"title":"Aspects of Gas Turbine Thermal Efficiency","authors":"L. Langston","doi":"10.1115/1.2020-sep4","DOIUrl":"https://doi.org/10.1115/1.2020-sep4","url":null,"abstract":"\u0000 In the family of heat engines, the gas turbine is unique in that it is used to produce two different kinds of useful power. By converting combusted fuel heat into work, a gas turbine engine can produce external shaft power (e.g., to drive a connected electric generator) or jet power (e.g., as a jet engine, to produce thrust forces to propel an aircraft). This means that the gas turbine’s thermodynamic figure of merit, thermal efficiency, is multifaceted, and calls for a nuanced examination.","PeriodicalId":18406,"journal":{"name":"Mechanical Engineering","volume":"54 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76001044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Engineers are accustomed to collaborating with multidisciplinary teams while working with physical prototypes. In the age of COVID-19, that is often impossible. This article delves into how some engineers have learned to work together virtually—while developing new skills that will help them when they return to their labs.
{"title":"Innovation in the Time of COVID-19","authors":"Kayt Sukel","doi":"10.1115/1.2020-aug2","DOIUrl":"https://doi.org/10.1115/1.2020-aug2","url":null,"abstract":"\u0000 Engineers are accustomed to collaborating with multidisciplinary teams while working with physical prototypes. In the age of COVID-19, that is often impossible. This article delves into how some engineers have learned to work together virtually—while developing new skills that will help them when they return to their labs.","PeriodicalId":18406,"journal":{"name":"Mechanical Engineering","volume":"6 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87730911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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