Pub Date : 2022-11-05DOI: 10.20965/ijat.2022.p0756
C. Ye, Y. Takaya, Yuki Tsunazawa, K. Mochidzuki, C. Tokoro
Grinding is a unit of operation of a pure mechanical process. An attritor is a grinder able to be used for fine or selective grinding. However, few studies have reported on the optimum design for the attritor. The attritor’s grinding characteristics and grinding effect depend not only on the operating conditions, but also on the geometry of the agitator. Therefore, we investigated the effect of the agitator shape on the grinding efficiency from the viewpoint of experiments, kinetic analysis, and discrete element method (DEM) simulations. We conducted grinding experiments with two different agitators. One was Agitator A, a traditional design with two pairs of 90° staggered mixing arms at the middle and bottom of the mixing shaft. The other was Agitator B, with a lower mixing arm inclined by 10° along the horizontal direction. We found that the grinding rate constant of Agitator B was approximately 40% greater than that of Agitator A. Although the size distribution of the particles was relatively dispersed after grinding with Agitator B, the distribution was concentrated mainly within two ranges (<0.5 mm and 2–4 mm) with Agitator A. These results and an elemental analysis of each size fraction suggested that the dominating grinding mode in Agitator A was surface grinding, whereas in Agitator B, it was bulk grinding. In terms of the influence of the agitator shape, the DEM simulation results showed that the kinetic energy of the grinding media in Agitator B was 0.0046 J/s, i.e., larger than the 0.0035 J/s obtained for Agitator A. A collision energy analysis showed that the dominating collision was between the media and wall in the tangential direction for both models. The collision energy of the media in Agitator B was larger than that of that in Agitator A. The results from the DEM simulation can help us evaluate the experimental results and infer the reasons why the grinding rate constant in Agitator B is larger than that in Agitator A.
{"title":"Influence of Agitator Shape on Characteristics and Grinding Efficiency of Attritor Mill","authors":"C. Ye, Y. Takaya, Yuki Tsunazawa, K. Mochidzuki, C. Tokoro","doi":"10.20965/ijat.2022.p0756","DOIUrl":"https://doi.org/10.20965/ijat.2022.p0756","url":null,"abstract":"Grinding is a unit of operation of a pure mechanical process. An attritor is a grinder able to be used for fine or selective grinding. However, few studies have reported on the optimum design for the attritor. The attritor’s grinding characteristics and grinding effect depend not only on the operating conditions, but also on the geometry of the agitator. Therefore, we investigated the effect of the agitator shape on the grinding efficiency from the viewpoint of experiments, kinetic analysis, and discrete element method (DEM) simulations. We conducted grinding experiments with two different agitators. One was Agitator A, a traditional design with two pairs of 90° staggered mixing arms at the middle and bottom of the mixing shaft. The other was Agitator B, with a lower mixing arm inclined by 10° along the horizontal direction. We found that the grinding rate constant of Agitator B was approximately 40% greater than that of Agitator A. Although the size distribution of the particles was relatively dispersed after grinding with Agitator B, the distribution was concentrated mainly within two ranges (<0.5 mm and 2–4 mm) with Agitator A. These results and an elemental analysis of each size fraction suggested that the dominating grinding mode in Agitator A was surface grinding, whereas in Agitator B, it was bulk grinding. In terms of the influence of the agitator shape, the DEM simulation results showed that the kinetic energy of the grinding media in Agitator B was 0.0046 J/s, i.e., larger than the 0.0035 J/s obtained for Agitator A. A collision energy analysis showed that the dominating collision was between the media and wall in the tangential direction for both models. The collision energy of the media in Agitator B was larger than that of that in Agitator A. The results from the DEM simulation can help us evaluate the experimental results and infer the reasons why the grinding rate constant in Agitator B is larger than that in Agitator A.","PeriodicalId":13583,"journal":{"name":"Int. J. Autom. Technol.","volume":"55 5 1","pages":"756-765"},"PeriodicalIF":0.0,"publicationDate":"2022-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89176430","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 : 2022-11-05DOI: 10.20965/ijat.2022.p0684
K. Halada, K. Tahara, M. Matsumoto
This study proposes new indicator, Resource Efficiency Account (REA). REA represents the effects of eco-design efforts in achieving a circular system. The key concept of REA is “acircularity.” “Acircularity” is the distance to the ideal circular system to be achieved. REA is given as material efficiency (service per total value of constituent materials) divided by acircularity. Acircularity is the sum of the value of resources that the techno-sphere demands from the eco-sphere, and the value of resources that are dissipated within the techno-sphere. If an utterly circular state is reached, the acircularity value is zero. Additionally, this study proposes a new method to quantify the decline of the quality of scrap provided to the market as a decline in the value of the material to calculate the dissipation. The calculation focuses on the control level of impurities in scrap. The validity of these indicators is discussed using an automobile case. Differences in the current circulation level, eco-design for recycling, and refurbishment efforts can be quantitatively evaluated using REA and acircularity.
{"title":"New Indicators 'Acircularity' and 'Resource Efficiency Account' to Evaluate the Efforts of Eco-Design in Circular Economy","authors":"K. Halada, K. Tahara, M. Matsumoto","doi":"10.20965/ijat.2022.p0684","DOIUrl":"https://doi.org/10.20965/ijat.2022.p0684","url":null,"abstract":"This study proposes new indicator, Resource Efficiency Account (REA). REA represents the effects of eco-design efforts in achieving a circular system. The key concept of REA is “acircularity.” “Acircularity” is the distance to the ideal circular system to be achieved. REA is given as material efficiency (service per total value of constituent materials) divided by acircularity. Acircularity is the sum of the value of resources that the techno-sphere demands from the eco-sphere, and the value of resources that are dissipated within the techno-sphere. If an utterly circular state is reached, the acircularity value is zero. Additionally, this study proposes a new method to quantify the decline of the quality of scrap provided to the market as a decline in the value of the material to calculate the dissipation. The calculation focuses on the control level of impurities in scrap. The validity of these indicators is discussed using an automobile case. Differences in the current circulation level, eco-design for recycling, and refurbishment efforts can be quantitatively evaluated using REA and acircularity.","PeriodicalId":13583,"journal":{"name":"Int. J. Autom. Technol.","volume":"31 1","pages":"684-695"},"PeriodicalIF":0.0,"publicationDate":"2022-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78496738","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 : 2022-11-05DOI: 10.20965/ijat.2022.p0879
H. Takezawa, Yuta Umeda, Ren Motomura, Shunya Hirano
In wire electrical discharge machining (WEDM) that can perform 2-D or 2.5-D machining, 3-D complex shape machining is also possible via the addition of a rotary axis on the NC table. Several examples of pin-shaped machining using a rotating shaft like spindle have been previously reported. Alternatively, machining using a rotary axis as an indexing device has also been reported. In these machining processes, the rotary axis is not servo controlled. Conversely, a spiral groove is formed on the outer circumference of the round bar by gripping the round bar workpiece on the rotary axis and performing machining in synchronization with the x- and rotary axes. In this machining, the gap control in electrical discharge machining is performed along the x- and rotary axes. Furthermore, complicated shape machining becomes possible by adding a 2-axis rotary axis of rotation and tilt. When the x-axis is synchronized with the rotation and tilt axes, a spiral groove with a variable groove width is formed. In this case, servo control is synchronized with the three axes, and machining proceeds. In this study, we performed spiral groove shape machining through WEDM with the addition of 1-axis or 2-axis rotary axes, consequently verifying the machining accuracy. Moreover, two types of NC program were used for machining, direct input and CAM output, and the accuracy was compared. The results revealed that the groove width was wider in the direct input program. Therefore, there was a possibility that the wire could bend during machining and tilt along the direction of the apparent widening of the groove width. Thus, it is necessary to consider the deflection of the wire in WEDM with a rotary axis, which is different from the conventional one, to realize precision machining.
{"title":"Spiral Groove Machining Through Wire Electrical Discharge Machining with Two Rotary Axes","authors":"H. Takezawa, Yuta Umeda, Ren Motomura, Shunya Hirano","doi":"10.20965/ijat.2022.p0879","DOIUrl":"https://doi.org/10.20965/ijat.2022.p0879","url":null,"abstract":"In wire electrical discharge machining (WEDM) that can perform 2-D or 2.5-D machining, 3-D complex shape machining is also possible via the addition of a rotary axis on the NC table. Several examples of pin-shaped machining using a rotating shaft like spindle have been previously reported. Alternatively, machining using a rotary axis as an indexing device has also been reported. In these machining processes, the rotary axis is not servo controlled. Conversely, a spiral groove is formed on the outer circumference of the round bar by gripping the round bar workpiece on the rotary axis and performing machining in synchronization with the x- and rotary axes. In this machining, the gap control in electrical discharge machining is performed along the x- and rotary axes. Furthermore, complicated shape machining becomes possible by adding a 2-axis rotary axis of rotation and tilt. When the x-axis is synchronized with the rotation and tilt axes, a spiral groove with a variable groove width is formed. In this case, servo control is synchronized with the three axes, and machining proceeds. In this study, we performed spiral groove shape machining through WEDM with the addition of 1-axis or 2-axis rotary axes, consequently verifying the machining accuracy. Moreover, two types of NC program were used for machining, direct input and CAM output, and the accuracy was compared. The results revealed that the groove width was wider in the direct input program. Therefore, there was a possibility that the wire could bend during machining and tilt along the direction of the apparent widening of the groove width. Thus, it is necessary to consider the deflection of the wire in WEDM with a rotary axis, which is different from the conventional one, to realize precision machining.","PeriodicalId":13583,"journal":{"name":"Int. J. Autom. Technol.","volume":"37 1","pages":"879-887"},"PeriodicalIF":0.0,"publicationDate":"2022-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75947808","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 : 2022-11-05DOI: 10.20965/ijat.2022.p0783
Yosuke Yamashita, K. Yoshida, Y. Kishita, Y. Umeda
Various nondestructive testing (NDT) methods have been proposed to detect defects inside products. The hammering test is an NDT technique widely used for this purpose. In this test method, a worker judges whether a part is defective or not by listening to the sound after hitting the product with a hammer. Conventional research has shown that a classifier using machine learning can discriminate the hammering data with high accuracy. However, to use these machine learning methods, a lot of samples are needed for learning. In actual industrial situations, it is difficult to collect a lot of samples of defective products. Regarding the hammering test, a machine learning method that can correctly discriminate defective products without sample data has not been proposed. This study aims to construct a system that can correctly discriminate the hammering test data even when there are no defective samples. We propose a method using ‘transfer learning.’ We conducted case studies to demonstrate the effectiveness of the proposed method using two variants of a brazed product. First, we verified the effectiveness of normal machine learning in a hammering test. In this study, we succeeded in discriminating brazed products, which were not correctly discriminated by the workers. We then applied the proposed method to brazed products. We succeeded in discriminating a variant of the brazed products by transferring the knowledge learned from another variant of the brazed products.
{"title":"Defect Detection in Multiple Product Variants Using Hammering Test with Machine Learning","authors":"Yosuke Yamashita, K. Yoshida, Y. Kishita, Y. Umeda","doi":"10.20965/ijat.2022.p0783","DOIUrl":"https://doi.org/10.20965/ijat.2022.p0783","url":null,"abstract":"Various nondestructive testing (NDT) methods have been proposed to detect defects inside products. The hammering test is an NDT technique widely used for this purpose. In this test method, a worker judges whether a part is defective or not by listening to the sound after hitting the product with a hammer. Conventional research has shown that a classifier using machine learning can discriminate the hammering data with high accuracy. However, to use these machine learning methods, a lot of samples are needed for learning. In actual industrial situations, it is difficult to collect a lot of samples of defective products. Regarding the hammering test, a machine learning method that can correctly discriminate defective products without sample data has not been proposed. This study aims to construct a system that can correctly discriminate the hammering test data even when there are no defective samples. We propose a method using ‘transfer learning.’ We conducted case studies to demonstrate the effectiveness of the proposed method using two variants of a brazed product. First, we verified the effectiveness of normal machine learning in a hammering test. In this study, we succeeded in discriminating brazed products, which were not correctly discriminated by the workers. We then applied the proposed method to brazed products. We succeeded in discriminating a variant of the brazed products by transferring the knowledge learned from another variant of the brazed products.","PeriodicalId":13583,"journal":{"name":"Int. J. Autom. Technol.","volume":"83 1","pages":"783-794"},"PeriodicalIF":0.0,"publicationDate":"2022-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85540375","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 : 2022-11-05DOI: 10.20965/ijat.2022.p0679
The award ceremony for the Best Paper Award and the Special Paper Award was held virtually on September 27, 2022. Since the influence of COVID-19 pandemic is still ongoing, the winners and IJAT committee members who took part in the selection process attended online. The award-winning papers were carefully selected from among the 85 papers published in Vol.15 (2021). The award winners were granted a certificate and a honorarium. We congratulate the winners and sincerely wish them success in the future.
{"title":"Editorial: Congratulations! The Best Paper Award 2022 and The Special Paper Award 2022","authors":"","doi":"10.20965/ijat.2022.p0679","DOIUrl":"https://doi.org/10.20965/ijat.2022.p0679","url":null,"abstract":"The award ceremony for the Best Paper Award and the Special Paper Award was held virtually on September 27, 2022. Since the influence of COVID-19 pandemic is still ongoing, the winners and IJAT committee members who took part in the selection process attended online. The award-winning papers were carefully selected from among the 85 papers published in Vol.15 (2021). The award winners were granted a certificate and a honorarium. We congratulate the winners and sincerely wish them success in the future.","PeriodicalId":13583,"journal":{"name":"Int. J. Autom. Technol.","volume":"2013 1","pages":"679-682"},"PeriodicalIF":0.0,"publicationDate":"2022-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86379573","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 : 2022-11-05DOI: 10.20965/ijat.2022.p0773
Naoko Sato, M. Matsumoto, H. Ogiso, Harumichi Sato
Remanufacturing is an industrial process of turning used products into products with the same quality as new ones. Of the processes comprising remanufacturing, the repair process poses the greatest challenge. Additive manufacturing (AM) is expected to bring innovation to the repair process of remanufacturing. Although, so far, the directed energy deposition (DED) type AM has been most frequently applied to remanufacturing and only a few studies applied powder bed fusion (PBF) type AM to remanufacturing, PBF demonstrates great potential for application in remanufacturing. This study aims to assess the feasibility of the application of PBF to remanufacturing. We conducted an experimental PBF-based repair and attempted to identify its challenges. In the experiment, 1) we used AlSi10Mg powder, 2) we first fabricated a 5 mm square cube sample by using PBF, 3) we next removed 0.4 mm of thickness from the sample with milling, 4) then we restored 0.44 mm of thickness using PBF, and 5) we observed the restored sample. The observation showed that: 1) misalignment in the restoration occurred, 2) keyhole defects and gas pores were found more in the boundary area between the original and restored parts, and 3) the microstructures showed polycrystals in the restored part. These factors impaired the quality and reliability of PBF-based repair and present challenges of enhancing the feasibility of applying PBF-based repair to remanufacturing. This study also examined the whole process of PBF-based remanufacturing, which includes not only the repair process but also the processes of component inspection, process design, pre-repair process, and post-repair process, and discussed the challenges in these processes. The challenges include the development of repair process design methods, supportless fabrication processes, and non-destructive test (NDT) techniques.
{"title":"Challenges of Remanufacturing Using Powder Bed Fusion Based Additive Manufacturing","authors":"Naoko Sato, M. Matsumoto, H. Ogiso, Harumichi Sato","doi":"10.20965/ijat.2022.p0773","DOIUrl":"https://doi.org/10.20965/ijat.2022.p0773","url":null,"abstract":"Remanufacturing is an industrial process of turning used products into products with the same quality as new ones. Of the processes comprising remanufacturing, the repair process poses the greatest challenge. Additive manufacturing (AM) is expected to bring innovation to the repair process of remanufacturing. Although, so far, the directed energy deposition (DED) type AM has been most frequently applied to remanufacturing and only a few studies applied powder bed fusion (PBF) type AM to remanufacturing, PBF demonstrates great potential for application in remanufacturing. This study aims to assess the feasibility of the application of PBF to remanufacturing. We conducted an experimental PBF-based repair and attempted to identify its challenges. In the experiment, 1) we used AlSi10Mg powder, 2) we first fabricated a 5 mm square cube sample by using PBF, 3) we next removed 0.4 mm of thickness from the sample with milling, 4) then we restored 0.44 mm of thickness using PBF, and 5) we observed the restored sample. The observation showed that: 1) misalignment in the restoration occurred, 2) keyhole defects and gas pores were found more in the boundary area between the original and restored parts, and 3) the microstructures showed polycrystals in the restored part. These factors impaired the quality and reliability of PBF-based repair and present challenges of enhancing the feasibility of applying PBF-based repair to remanufacturing. This study also examined the whole process of PBF-based remanufacturing, which includes not only the repair process but also the processes of component inspection, process design, pre-repair process, and post-repair process, and discussed the challenges in these processes. The challenges include the development of repair process design methods, supportless fabrication processes, and non-destructive test (NDT) techniques.","PeriodicalId":13583,"journal":{"name":"Int. J. Autom. Technol.","volume":"15 1","pages":"773-782"},"PeriodicalIF":0.0,"publicationDate":"2022-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84729693","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 : 2022-11-05DOI: 10.20965/ijat.2022.p0897
Shoichi Tamura, A. Ezura, T. Matsumura
Additively manufactured parts have recently been applied to products in aerospace, automobile, and tool industries in terms of design flexibility and material consumption with mechanical strength. Because the surfaces of additively manufactured parts are coarse, milling is conducted as a post-process to achieve fine surfaces within the specified tolerance. However, the microstructures and the mechanical properties of additively manufactured metals differ from those of wrought metals. Therefore, the cutting characteristics should be understood to determine the appropriate cutting parameters. The paper studies the cutting process in peripheral milling of additively manufactured maraging steel in a cutting model. The cutting force, the surface finish, the chip morphology, and the tool wear were evaluated through cutting tests. Although the hardness of the additively manufactured workpiece was higher than that of the wrought workpiece, the maximum cutting forces were approximately the same. An energy-based force model was applied to discuss the cutting force characteristics in terms of the shear area and the shear stress on the shear plane. In milling of additively manufactured workpiece, the shear stress on the shear plane becomes larger than that of the wrought workpiece. However, the shear plane length is short at a large shear angle. Therefore, the cutting force does not significantly increase. The typical change in the cutting force of the additively manufactured workpiece is also compared with that of the wrought workpiece in terms of the cutting model. The chip flow directions, then, are analyzed in the cutting force model. The chips of the additively manufactured workpiece flow more in the radial direction than those of the wrought workpiece.
{"title":"Cutting Force in Peripheral Milling of Additively Manufactured Maraging Steel","authors":"Shoichi Tamura, A. Ezura, T. Matsumura","doi":"10.20965/ijat.2022.p0897","DOIUrl":"https://doi.org/10.20965/ijat.2022.p0897","url":null,"abstract":"Additively manufactured parts have recently been applied to products in aerospace, automobile, and tool industries in terms of design flexibility and material consumption with mechanical strength. Because the surfaces of additively manufactured parts are coarse, milling is conducted as a post-process to achieve fine surfaces within the specified tolerance. However, the microstructures and the mechanical properties of additively manufactured metals differ from those of wrought metals. Therefore, the cutting characteristics should be understood to determine the appropriate cutting parameters. The paper studies the cutting process in peripheral milling of additively manufactured maraging steel in a cutting model. The cutting force, the surface finish, the chip morphology, and the tool wear were evaluated through cutting tests. Although the hardness of the additively manufactured workpiece was higher than that of the wrought workpiece, the maximum cutting forces were approximately the same. An energy-based force model was applied to discuss the cutting force characteristics in terms of the shear area and the shear stress on the shear plane. In milling of additively manufactured workpiece, the shear stress on the shear plane becomes larger than that of the wrought workpiece. However, the shear plane length is short at a large shear angle. Therefore, the cutting force does not significantly increase. The typical change in the cutting force of the additively manufactured workpiece is also compared with that of the wrought workpiece in terms of the cutting model. The chip flow directions, then, are analyzed in the cutting force model. The chips of the additively manufactured workpiece flow more in the radial direction than those of the wrought workpiece.","PeriodicalId":13583,"journal":{"name":"Int. J. Autom. Technol.","volume":"53 5 1","pages":"897-905"},"PeriodicalIF":0.0,"publicationDate":"2022-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89667132","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 : 2022-11-05DOI: 10.20965/ijat.2022.p0814
A. Y. T. Panuju, M. Martinus, Akhmad Riszal, Hideki Kobayashi
Sustainable design in product development has multiple roles in addressing an increased level of sustainability. This includes reducing resource consumption and modifying user behaviors to become more eco-friendly. However, these functions are typically assessed separately, despite a proposed mutual correlation. This paper proposes a framework for defining this correlation. By using the correlated functions in parallel, one can enhance the product development process, and this will strengthen the use of sustainable design as a powerful design tool for future products. A practical approach for implementation is needed, which should show the benefit of the design both from the environmental aspect and a change in the responsibility of users. The primary goal of this manuscript is to propose an approach to fill this gap, using experiments to explore the effect of a washing machine modification project in Indonesia. Resource consumption while doing the laundry is measured as a representation of the environmental impact, while the users’ predisposition for environmental responsibility inclination is analyzed by scaling the responsibility. The results show that the sustainable design strategy is effective in reducing the environmental impact, while simultaneously increasing the environmental responsibility of users. Further study is required to define the correlation between the measured factors to formulate a well-developed theory related to this correlation.
{"title":"Sustainable Design Implementation - Measuring Environmental Impact and User Responsibility","authors":"A. Y. T. Panuju, M. Martinus, Akhmad Riszal, Hideki Kobayashi","doi":"10.20965/ijat.2022.p0814","DOIUrl":"https://doi.org/10.20965/ijat.2022.p0814","url":null,"abstract":"Sustainable design in product development has multiple roles in addressing an increased level of sustainability. This includes reducing resource consumption and modifying user behaviors to become more eco-friendly. However, these functions are typically assessed separately, despite a proposed mutual correlation. This paper proposes a framework for defining this correlation. By using the correlated functions in parallel, one can enhance the product development process, and this will strengthen the use of sustainable design as a powerful design tool for future products. A practical approach for implementation is needed, which should show the benefit of the design both from the environmental aspect and a change in the responsibility of users. The primary goal of this manuscript is to propose an approach to fill this gap, using experiments to explore the effect of a washing machine modification project in Indonesia. Resource consumption while doing the laundry is measured as a representation of the environmental impact, while the users’ predisposition for environmental responsibility inclination is analyzed by scaling the responsibility. The results show that the sustainable design strategy is effective in reducing the environmental impact, while simultaneously increasing the environmental responsibility of users. Further study is required to define the correlation between the measured factors to formulate a well-developed theory related to this correlation.","PeriodicalId":13583,"journal":{"name":"Int. J. Autom. Technol.","volume":"63 1","pages":"814-823"},"PeriodicalIF":0.0,"publicationDate":"2022-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91037394","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 : 2022-11-05DOI: 10.20965/ijat.2022.p0824
M. Kojima
Remanufacturing policies have been gradually introduced in Asian countries, such as China, Japan, Malaysia, Singapore, and Thailand. This paper reviews the process of diffusion of remanufacturing policy in Asia. The mechanism of this diffusion is also discussed. The United States began to promote the idea of remanufacturing around the year 2000 through bilateral free trade agreements with Asian countries and international forums such as G8 and the Asia-Pacific Economic Cooperation (APEC). This paper reviews the various efforts on remanufacturing in Asian countries and discusses policy options for promoting remanufacturing. It is crucial to identify the ways to promote remanufacturing in each country in the region to improve resource efficacy and strengthen the circular economy in Asia.
{"title":"The Diffusion of Remanufacturing Policies in Asia","authors":"M. Kojima","doi":"10.20965/ijat.2022.p0824","DOIUrl":"https://doi.org/10.20965/ijat.2022.p0824","url":null,"abstract":"Remanufacturing policies have been gradually introduced in Asian countries, such as China, Japan, Malaysia, Singapore, and Thailand. This paper reviews the process of diffusion of remanufacturing policy in Asia. The mechanism of this diffusion is also discussed. The United States began to promote the idea of remanufacturing around the year 2000 through bilateral free trade agreements with Asian countries and international forums such as G8 and the Asia-Pacific Economic Cooperation (APEC). This paper reviews the various efforts on remanufacturing in Asian countries and discusses policy options for promoting remanufacturing. It is crucial to identify the ways to promote remanufacturing in each country in the region to improve resource efficacy and strengthen the circular economy in Asia.","PeriodicalId":13583,"journal":{"name":"Int. J. Autom. Technol.","volume":"51 1","pages":"824-830"},"PeriodicalIF":0.0,"publicationDate":"2022-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78720721","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 : 2022-11-05DOI: 10.20965/ijat.2022.p0838
N. Gerdsri, P. Teekasap
Economic development must occur alongside environmental sustainability. The circular economy (CE) in an industrial context is a critical area that has been widely studied. However, the scope of the CE is broad and involves the development of various fields, ranging from energy and production to digitalization. The areas targeted for CE development also vary according to the stage of economic development. This study focuses on identifying the potential for CE development from the perspective of developing economies by using patent and bibliometric analyses.
{"title":"Identifying Potential Areas for Circular Economy Development from the Perspective of Developing Economies: Using Patent and Bibliometric Analyses","authors":"N. Gerdsri, P. Teekasap","doi":"10.20965/ijat.2022.p0838","DOIUrl":"https://doi.org/10.20965/ijat.2022.p0838","url":null,"abstract":"Economic development must occur alongside environmental sustainability. The circular economy (CE) in an industrial context is a critical area that has been widely studied. However, the scope of the CE is broad and involves the development of various fields, ranging from energy and production to digitalization. The areas targeted for CE development also vary according to the stage of economic development. This study focuses on identifying the potential for CE development from the perspective of developing economies by using patent and bibliometric analyses.","PeriodicalId":13583,"journal":{"name":"Int. J. Autom. Technol.","volume":"211 1","pages":"838-844"},"PeriodicalIF":0.0,"publicationDate":"2022-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85023376","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：