Yadira Solana Reyes, Jose Angel RAMOS BANDERAS, Pedro GARNICA GONZALEZ, Alondra Jacqueline BOCANEGRA HUERAMO
The microstructure before intercritical annealing of an AHSS (Advanced High Strength Steel) with medium Mn content plays an important role in the final mechanical properties, since the transformations occurring during annealing modify phases, composition, and morphology. The microstructural changes that occur during intercritical annealing treatment of a medium Mn steel were examined. Two starting material comes from different conditions, hot rolling at 1200°C and warm rolling (initial rolling at 1200°C and subsequent at 680°C). The mechanical properties were related to the transformation phenomena that occur in these steels, mainly TRIP (Transformation Induced Plasticity) and TWIP (Twinning Induced Plasticity) effects. The transformations were verified by SEM (Scanning Electron Microscopy) and X-RD (X-Ray Diffraction). Tensile strength values of 1111 MPa and 17% elongation were obtained by hot rolling route. For the warm rolling route, 35% deformation and a tensile strength of 1357 MPa were obtained. The strain hardening curve was analyzed, showing the presence of the TWIP effect subsequently "saw" behavior related to the discontinuous TRIP effect. The mechanic properties values are related to the difference in morphology phases present. An acicular morphology of a/? (ferrite/austenite) provides a higher value of tensile strength, but low elongation percentage, and a mixture of lamellar and globular morphologies, provides an optimized combination of strength and ductility. Key words: AHSS, medium manganese steel, rolling, heat treatment, discontinuous TRIP effect, TWIP.
{"title":"MECHANICAL BEHAVIOR OF AN HIGH STRENGHT STEEL (AHSS) WITH MEDIUM MN CONTENT IN TWO ROLLING CONDITIONS: HOT AND WARM","authors":"Yadira Solana Reyes, Jose Angel RAMOS BANDERAS, Pedro GARNICA GONZALEZ, Alondra Jacqueline BOCANEGRA HUERAMO","doi":"10.6036/10895","DOIUrl":"https://doi.org/10.6036/10895","url":null,"abstract":"The microstructure before intercritical annealing of an AHSS (Advanced High Strength Steel) with medium Mn content plays an important role in the final mechanical properties, since the transformations occurring during annealing modify phases, composition, and morphology. The microstructural changes that occur during intercritical annealing treatment of a medium Mn steel were examined. Two starting material comes from different conditions, hot rolling at 1200°C and warm rolling (initial rolling at 1200°C and subsequent at 680°C). The mechanical properties were related to the transformation phenomena that occur in these steels, mainly TRIP (Transformation Induced Plasticity) and TWIP (Twinning Induced Plasticity) effects. The transformations were verified by SEM (Scanning Electron Microscopy) and X-RD (X-Ray Diffraction). Tensile strength values of 1111 MPa and 17% elongation were obtained by hot rolling route. For the warm rolling route, 35% deformation and a tensile strength of 1357 MPa were obtained. The strain hardening curve was analyzed, showing the presence of the TWIP effect subsequently \"saw\" behavior related to the discontinuous TRIP effect. The mechanic properties values are related to the difference in morphology phases present. An acicular morphology of a/? (ferrite/austenite) provides a higher value of tensile strength, but low elongation percentage, and a mixture of lamellar and globular morphologies, provides an optimized combination of strength and ductility.\u0000\u0000Key words: AHSS, medium manganese steel, rolling, heat treatment, discontinuous TRIP effect, TWIP.","PeriodicalId":50565,"journal":{"name":"Dyna-Colombia","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42081625","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}
The incubation process of a business idea in its preliminary stages allows a better understanding of the entrepreneur from individual perspectives. However, its study has been limited, generating unsustainability in various ventures. Therefore, business resilience is a key factor for the entrepreneurial spirit, since it allows the entrepreneur to adapt and grow in the face of unexpected changes. The purpose of this research is to analyze entrepreneurial resilience within the framework of a learning management model in incubators. A qualitative approach was obtained through the literature review and a quantitative approach with descriptive, correlational and multivariate statistical analysis. The findings demonstrated that entrepreneurial resilience is decisive in the learning management model in incubators. The research provides a measurement scale with high internal consistency and validity, demonstrated by principal component analysis, ensuring the reliability of the results obtained.
{"title":"Analysis of entrepreneurial resilience as part of the development of entrepreneurship in a learning management model in incubators","authors":"Jorge Enrique Taboada-Álvarez, Milton Januario Rueda-Varon, Sandra Jennina Sanchez-Perdomo","doi":"10.15446/dyna.v90n228.108624","DOIUrl":"https://doi.org/10.15446/dyna.v90n228.108624","url":null,"abstract":"The incubation process of a business idea in its preliminary stages allows a better understanding of the entrepreneur from individual perspectives. However, its study has been limited, generating unsustainability in various ventures. Therefore, business resilience is a key factor for the entrepreneurial spirit, since it allows the entrepreneur to adapt and grow in the face of unexpected changes. The purpose of this research is to analyze entrepreneurial resilience within the framework of a learning management model in incubators. A qualitative approach was obtained through the literature review and a quantitative approach with descriptive, correlational and multivariate statistical analysis. The findings demonstrated that entrepreneurial resilience is decisive in the learning management model in incubators. The research provides a measurement scale with high internal consistency and validity, demonstrated by principal component analysis, ensuring the reliability of the results obtained.","PeriodicalId":50565,"journal":{"name":"Dyna-Colombia","volume":"198 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134917413","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 : 2023-09-01DOI: 10.15446/dyna.v90n228.108641
Yasmín Galvis-Ardila, Marco Antonio Colmenares-Perdomo, Milton Januario Rueda-Varón
Planificar las comunicaciones, manejarlas y monitorearlas son los pasos recomendados para la gestión de las comunicaciones en la gestión de proyectos. Por ello Malluk [1], Odine [2] y Muszinska [3], entre otros, resaltan la necesidad de entender la gestión de proyectos y la comunicación organizacional desde una perspectiva holística para que los proyectos tengan un manejo orgánico y sean exitosos. A partir de esto, desde el 2020 se está trabajando en la Universidad Ean en una investigación que busca demostrar la importancia del rol de la comunicación en la gestión de proyectos, que garantice una integración holística y orgánica. Como resultado de esta investigación, en este artículo se presentará un modelo de comunicaciones para la gestión de proyectos en donde se ve la comunicación como constitutiva de los proyectos en lugar de ser un simple instrumento.
{"title":"The role of communication in project management: validation of a communication management model for project management","authors":"Yasmín Galvis-Ardila, Marco Antonio Colmenares-Perdomo, Milton Januario Rueda-Varón","doi":"10.15446/dyna.v90n228.108641","DOIUrl":"https://doi.org/10.15446/dyna.v90n228.108641","url":null,"abstract":"Planificar las comunicaciones, manejarlas y monitorearlas son los pasos recomendados para la gestión de las comunicaciones en la gestión de proyectos. Por ello Malluk [1], Odine [2] y Muszinska [3], entre otros, resaltan la necesidad de entender la gestión de proyectos y la comunicación organizacional desde una perspectiva holística para que los proyectos tengan un manejo orgánico y sean exitosos. A partir de esto, desde el 2020 se está trabajando en la Universidad Ean en una investigación que busca demostrar la importancia del rol de la comunicación en la gestión de proyectos, que garantice una integración holística y orgánica. Como resultado de esta investigación, en este artículo se presentará un modelo de comunicaciones para la gestión de proyectos en donde se ve la comunicación como constitutiva de los proyectos en lugar de ser un simple instrumento.","PeriodicalId":50565,"journal":{"name":"Dyna-Colombia","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134993813","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}
Pablo CIFUENTES FIALLOS, J. ROMEU GARBI, Teresa Pàmies Gómez
In order to monitor the condition of machinery complex industrial environments, high-cost equipment is required for signal acquisition and processing. However, low-cost sensor nodes with high processing capability are a potential solution to improve diagnostic systems. This paper presents a low-cost device for fault diagnosis based on the vibration response in rotating machines with the implementation of the Hilbert-Huang transform (HHT) analysis to extract the main characteristics of the signal. HHT, used to analyze non-linear and non-stationary signals, incorporates an Empirical Mode Decomposition (EMD) process. Processing is carried out in an embedded system to acquire vibration response data and extract signal characteristics that allow condition monitoring. As a result of local processing in the vibratory measurement device in an embedded system, it is achieved to decompose the signal in order to the characteristic failure in the bearing and transmit the alarm to a hub. This eliminates the need for a central diagnostic system and reduces the total cost of the system. Keywords: vibration detection; fault diagnosis; empirical mode decomposition (EMD); local processing, embedded systems.
{"title":"LOW-COST DEVICE FOR FAULT DIAGNOSIS IN BEARINGS BASED ON THE HILBERT-HUANG TRANSFORM","authors":"Pablo CIFUENTES FIALLOS, J. ROMEU GARBI, Teresa Pàmies Gómez","doi":"10.6036/10875","DOIUrl":"https://doi.org/10.6036/10875","url":null,"abstract":"In order to monitor the condition of machinery complex industrial environments, high-cost equipment is required for signal acquisition and processing. However, low-cost sensor nodes with high processing capability are a potential solution to improve diagnostic systems. This paper presents a low-cost device for fault diagnosis based on the vibration response in rotating machines with the implementation of the Hilbert-Huang transform (HHT) analysis to extract the main characteristics of the signal. HHT, used to analyze non-linear and non-stationary signals, incorporates an Empirical Mode Decomposition (EMD) process. \u0000Processing is carried out in an embedded system to acquire vibration response data and extract signal characteristics that allow condition monitoring. As a result of local processing in the vibratory measurement device in an embedded system, it is achieved to decompose the signal in order to the characteristic failure in the bearing and transmit the alarm to a hub. This eliminates the need for a central diagnostic system and reduces the total cost of the system. \u0000\u0000Keywords: vibration detection; fault diagnosis; empirical mode decomposition (EMD); local processing, embedded systems.","PeriodicalId":50565,"journal":{"name":"Dyna-Colombia","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42982710","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}
A. Babaei, Sebastián Llopis, Leire ZUBIZARRETA SAENZ DE ZAITEGUI, Mayte GIL AGUSTI, Marta GARCIA GARCIA, Alfredo Quijano López
This article reviews the current status and future prospects of solid-state batteries. The study focuses on the description of the challenges and needs for the technological development of solid-state batteries and the research aimed at solving current and future challenges. Finally, the projects related to this type of technology within the Horizon 2020 programme are reviewed.
{"title":"SOLID STATE BATTERIES: CHALLENGES AND PROJECTION (Part 2/2)","authors":"A. Babaei, Sebastián Llopis, Leire ZUBIZARRETA SAENZ DE ZAITEGUI, Mayte GIL AGUSTI, Marta GARCIA GARCIA, Alfredo Quijano López","doi":"10.6036/10848","DOIUrl":"https://doi.org/10.6036/10848","url":null,"abstract":"This article reviews the current status and future prospects of solid-state batteries. The study focuses on the description of the challenges and needs for the technological development of solid-state batteries and the research aimed at solving current and future challenges. Finally, the projects related to this type of technology within the Horizon 2020 programme are reviewed.","PeriodicalId":50565,"journal":{"name":"Dyna-Colombia","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46715582","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}
Jian Gong, Qianqian Liu, Shuren Wang, Z. Wang, Chunliu Li
To apply the composite material of magnesium oxychloride cement (MOC) doped with paper mill sludge (PMS) to engineering, the four modifiers such as phenylacrylic emulsion (PE), sodium methyl silicate (SMS), sodium phosphate monobasic (SPM), and citric acid (CA) were used to explore their effects on the composite material. The effects of these modifiers on the setting time, flowability, mechanical strength, softening coefficient, and strength loss coefficient of the composites were analyzed by physical properties, mechanical strength, water resistance, and resistance to sulfate attack, as well as by XRD. Results show that all four different modifiers can delay the setting time of the slurry and increase the fluidity of the mortar. With the increase of modifier dosage, the strength of mortar modified by different modifiers is lower than that of the control group, and the softening coefficient and sulfate erosion resistance coefficient of the modified mortar are significantly improved. At 2% and 1.5%, respectively, SPM and CA have the best modification effects, but PE integration decreases the softening coefficient of the mortar and only increases it by 47.30% at 0.5%. The obtained conclusions can provide a reference for the engineering application of PMS-MOC. Keywords: Magnesium oxychloride cement, Paper mill sludge, Composite materials, Modification, Softening coefficient.
{"title":"EFFECTS OF MODIFIERS ON MAGNESIUM OXYCHLORIDE CEMENT DOPED WITH PAPER MILL SLUDGE","authors":"Jian Gong, Qianqian Liu, Shuren Wang, Z. Wang, Chunliu Li","doi":"10.6036/10968","DOIUrl":"https://doi.org/10.6036/10968","url":null,"abstract":"To apply the composite material of magnesium oxychloride cement (MOC) doped with paper mill sludge (PMS) to engineering, the four modifiers such as phenylacrylic emulsion (PE), sodium methyl silicate (SMS), sodium phosphate monobasic (SPM), and citric acid (CA) were used to explore their effects on the composite material. The effects of these modifiers on the setting time, flowability, mechanical strength, softening coefficient, and strength loss coefficient of the composites were analyzed by physical properties, mechanical strength, water resistance, and resistance to sulfate attack, as well as by XRD. Results show that all four different modifiers can delay the setting time of the slurry and increase the fluidity of the mortar. With the increase of modifier dosage, the strength of mortar modified by different modifiers is lower than that of the control group, and the softening coefficient and sulfate erosion resistance coefficient of the modified mortar are significantly improved. At 2% and 1.5%, respectively, SPM and CA have the best modification effects, but PE integration decreases the softening coefficient of the mortar and only increases it by 47.30% at 0.5%. The obtained conclusions can provide a reference for the engineering application of PMS-MOC.\u0000\u0000Keywords: Magnesium oxychloride cement, Paper mill sludge, Composite materials, Modification, Softening coefficient.\u0000","PeriodicalId":50565,"journal":{"name":"Dyna-Colombia","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48320903","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}
Qi She, D. Yan, Changsong Chen, Yining Ma, Gen Huang
The construction process of composite cable-stayed bridges varies, and it closely affects the finished bridge. This study takes the Chibi Yangtze River Highway Bridge, which is the world's largest-span composite cable-stayed bridge, as an example in determining the optimal scheme of girder erection during the construction of the composite cable-stayed bridge. Six girder construction schemes were proposed for comparison and analysis. On the basis of satisfying the objective principles of the finished bridge, the stress safety principle, and the economic principle, qualitative and quantitative methods were used to analyze the girder erection schemes. The refined model of the composite girder segment was established by the finite element software ABAQUS to examine the local stress of the bridge. Subsequently, the optimal scheme of girder erection was determined. Then, the key calculation results of the optimal scheme of girder erection during the construction stages and for the finished bridge were given, which proved the feasibility, safety, economy, and controllability of the proposed optimal scheme. Results show that the measured data of the girder line shapes and the cable forces of the finished bridge agree well with the theoretical values. This agreement verifies the correctness of the determination and demonstration of the proposed optimal scheme. This study provides a certain reference for the determination of the girder erection scheme of composite cable-stayed bridges. Keywords: Composite girder; cable-stayed bridge; steel girder erection; single segment one cycle; two segments one cycle; construction process;
{"title":"COMPARATIVE STUDY ON THE GIRDER ERECTION SCHEME FOR THE CHIBI YANGTZE RIVER HIGHWAY BRIDGE","authors":"Qi She, D. Yan, Changsong Chen, Yining Ma, Gen Huang","doi":"10.6036/10915","DOIUrl":"https://doi.org/10.6036/10915","url":null,"abstract":"The construction process of composite cable-stayed bridges varies, and it closely affects the finished bridge. This study takes the Chibi Yangtze River Highway Bridge, which is the world's largest-span composite cable-stayed bridge, as an example in determining the optimal scheme of girder erection during the construction of the composite cable-stayed bridge. Six girder construction schemes were proposed for comparison and analysis. On the basis of satisfying the objective principles of the finished bridge, the stress safety principle, and the economic principle, qualitative and quantitative methods were used to analyze the girder erection schemes. The refined model of the composite girder segment was established by the finite element software ABAQUS to examine the local stress of the bridge. Subsequently, the optimal scheme of girder erection was determined. Then, the key calculation results of the optimal scheme of girder erection during the construction stages and for the finished bridge were given, which proved the feasibility, safety, economy, and controllability of the proposed optimal scheme. Results show that the measured data of the girder line shapes and the cable forces of the finished bridge agree well with the theoretical values. This agreement verifies the correctness of the determination and demonstration of the proposed optimal scheme. This study provides a certain reference for the determination of the girder erection scheme of composite cable-stayed bridges.\u0000\u0000Keywords: Composite girder; cable-stayed bridge; steel girder erection; single segment one cycle; two segments one cycle; construction process;\u0000","PeriodicalId":50565,"journal":{"name":"Dyna-Colombia","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46437447","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}
Recently, solar dryers research has focused on determining the drying kinetics and its description from mathematical models; however, exergetic studies are relatively limited. Theoretical and experimental studies are required to break the knowledge barrier with this approach, assessing the maximum potential useful work wasted (exergy loss) by a system as it equilibrates with a reference environment (environment). Through the instrumentation of cabinet–type solar dryers, this work presents the exergetic analysis to evaluate the heat and mass transfer processes of soybean in hot-humid climates. The thermal performance of solar dryer with natural and forced convection was compared. The behavior of irradiance, ambient temperature, and relative humidity and their relationship with weight loss were analyzed. For natural and forced convection, the average exergetic efficiencies were 47.40% and 53.67%, respectively. Sustainability indicators were estimated: improvement potential, sustainability index, and wasted energy ratio. The exergetic performance was better in the process with forced convection compared to natural Keywords: Exergetic analysis, Solar drying technologies, Sustainability indicators.
{"title":"EXERGETIC ANALYSIS OF THE SOYBEAN DRYING PROCESS WITH SOLAR ENERGY IN HOT-HUMID CLIMATES","authors":"Israel Acosta, M. Castillo Téllez","doi":"10.6036/10536","DOIUrl":"https://doi.org/10.6036/10536","url":null,"abstract":"Recently, solar dryers research has focused on determining the drying kinetics and its description from mathematical models; however, exergetic studies are relatively limited. Theoretical and experimental studies are required to break the knowledge barrier with this approach, assessing the maximum potential useful work wasted (exergy loss) by a system as it equilibrates with a reference environment (environment). Through the instrumentation of cabinet–type solar dryers, this work presents the exergetic analysis to evaluate the heat and mass transfer processes of soybean in hot-humid climates. The thermal performance of solar dryer with natural and forced convection was compared. The behavior of irradiance, ambient temperature, and relative humidity and their relationship with weight loss were analyzed. For natural and forced convection, the average exergetic efficiencies were 47.40% and 53.67%, respectively. Sustainability indicators were estimated: improvement potential, sustainability index, and wasted energy ratio. The exergetic performance was better in the process with forced convection compared to natural\u0000\u0000Keywords: Exergetic analysis, Solar drying technologies, Sustainability indicators.","PeriodicalId":50565,"journal":{"name":"Dyna-Colombia","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43989462","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}
Jose Luis Outón Méndez, Aitor IBARGUREN SOLDEVILLA, Ivan VILLAVERDE DE LA NAVA, Paul Daelman, D. Sallé, Jose Maria MARTINEZ OTZETA, I. Rodriguez, B. Sierra
In a context of a pandemic caused by the SARS-CoV-2 virus, there is a need to disinfect busy areas such as schools, hospitals, nursing homes, laboratories, public transport, etc. using techniques that pose a risk to health. In turn, the robotics industry is at a critical moment with great developments and applications in numerous applications. Therefore, the figure of robots is of great interest as they have the ability to perform these tasks autonomously. However, there are great challenges in current robotics that must be resolved in order to perform tasks correctly. This is the specific case of door opening. Something necessary since to achieve a complete disinfection the robot must go through all the rooms of the installation. In this work, a solution to the problem of opening doors is presented by means of a mobile robot to which artificial perception techniques are applied for detection, handling and autonomous navigation. Keywords: autonomous navigation, artificial perception, learning by demonstration, skills-based programming, door opening, AIMM, mobile robotics, sensor fusion
{"title":"ROBOTIC SOLUTION FOR OPENING DOORS IN CONTAINED OR HIGH BIOLOGICAL RISK FACILITIES","authors":"Jose Luis Outón Méndez, Aitor IBARGUREN SOLDEVILLA, Ivan VILLAVERDE DE LA NAVA, Paul Daelman, D. Sallé, Jose Maria MARTINEZ OTZETA, I. Rodriguez, B. Sierra","doi":"10.6036/10745","DOIUrl":"https://doi.org/10.6036/10745","url":null,"abstract":"In a context of a pandemic caused by the SARS-CoV-2 virus, there is a need to disinfect busy areas such as schools, hospitals, nursing homes, laboratories, public transport, etc. using techniques that pose a risk to health. In turn, the robotics industry is at a critical moment with great developments and applications in numerous applications. Therefore, the figure of robots is of great interest as they have the ability to perform these tasks autonomously. However, there are great challenges in current robotics that must be resolved in order to perform tasks correctly. This is the specific case of door opening. Something necessary since to achieve a complete disinfection the robot must go through all the rooms of the installation.\u0000In this work, a solution to the problem of opening doors is presented by means of a mobile robot to which artificial perception techniques are applied for detection, handling and autonomous navigation.\u0000\u0000Keywords: autonomous navigation, artificial perception, learning by demonstration, skills-based programming, door opening, AIMM, mobile robotics, sensor fusion","PeriodicalId":50565,"journal":{"name":"Dyna-Colombia","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42343177","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}
Ramon Miralbes Buil, N. Santamaria, Nuno CURADO CORREIA, David Ranz Angulo
Triply periodic minimal surface structures (TPMSs) can be used as a substitute for polymeric foams in applications where is necessary to absorb a large amount of energy with high structural deformation. Diamond TPMS offers higher energy absorption per unit weight. This structure is based on the Ashby-Gibson material model that establishes the main mechanical material properties as functions of the relative density and material properties. However, since TPMSs are used in dynamic applications, it is essential to analyse them under dynamic loads. In this study, we investigate the influence of the strain rate on the Ashby-Gibson parameters of sheet diamond Keywords: Triple periodic minimal surface; strain rate; additive manufacturing; diamond; Ashby-Gibson
{"title":"INFLUENCE OF STRAIN RATE ON THE ASHBY-GIBSON PARAMETERS OF SHEET DIAMOND LATTICE STRUCTURES","authors":"Ramon Miralbes Buil, N. Santamaria, Nuno CURADO CORREIA, David Ranz Angulo","doi":"10.6036/10721","DOIUrl":"https://doi.org/10.6036/10721","url":null,"abstract":"Triply periodic minimal surface structures (TPMSs) can be used as a substitute for polymeric foams in applications where is necessary to absorb a large amount of energy with high structural deformation. Diamond TPMS offers higher energy absorption per unit weight. This structure is based on the Ashby-Gibson material model that establishes the main mechanical material properties as functions of the relative density and material properties. However, since TPMSs are used in dynamic applications, it is essential to analyse them under dynamic loads. In this study, we investigate the influence of the strain rate on the Ashby-Gibson parameters of sheet diamond\u0000Keywords: Triple periodic minimal surface; strain rate; additive manufacturing; diamond; Ashby-Gibson","PeriodicalId":50565,"journal":{"name":"Dyna-Colombia","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42778296","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：