There have been numerous research studies stating the fact that the pandemic affected people with disabilities’ working lives. Less research has been conducted on how people with disabilities coped with and learned from these challenges. This scoping review maps research conducted in the field of disability research and multidisciplinary research, published from the outbreak of the pandemic until October 31, 2022. The focus is on how people with disabilities adapted their working lives to the conditions caused by the COVID-19 pandemic and what working practices and strategies they applied to manage the situation. From an extensive search in bibliographic databases, eight research articles were identified. The review results reveal both challenges and new openings for the working life of people with disabilities post-pandemic. Implications for future research are identified, addressing intersectionality, hybrid work environments, digital gaps and increased participation of people with disabilities in research.
{"title":"A Scoping Review of Research Exploring Working Life Practices of People with Disabilities During the COVID-19 Pandemic","authors":"Magnus Eriksson, Elisabet M. Nilsson, J. Lundälv","doi":"10.16993/sjdr.1012","DOIUrl":"https://doi.org/10.16993/sjdr.1012","url":null,"abstract":"There have been numerous research studies stating the fact that the pandemic affected people with disabilities’ working lives. Less research has been conducted on how people with disabilities coped with and learned from these challenges. This scoping review maps research conducted in the field of disability research and multidisciplinary research, published from the outbreak of the pandemic until October 31, 2022. The focus is on how people with disabilities adapted their working lives to the conditions caused by the COVID-19 pandemic and what working practices and strategies they applied to manage the situation. From an extensive search in bibliographic databases, eight research articles were identified. The review results reveal both challenges and new openings for the working life of people with disabilities post-pandemic. Implications for future research are identified, addressing intersectionality, hybrid work environments, digital gaps and increased participation of people with disabilities in research.","PeriodicalId":46073,"journal":{"name":"Scandinavian Journal of Disability Research","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43878566","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}
This paper explores the experiences of a doctoral disabled student at a university to examine how ableist structures in graduate programs affect access to higher education and post-degree outcomes. Guided by the DisCrit framework and autoethnography approach, the article illuminates systems and processes that disadvantage graduate disabled students. Through intersectional analyses of disability, race, and origin, the article makes visible manifestations of disability microaggressions and systemic ableism, racism, and xenophobia. It interrogates the perpetuation and normalization of academic transgressions, including exclusionary practices that degrade and oppress graduate disabled students and hinder them from seeking success. Finally, the argument is made in favour of reforms to authenticate disability culture, validate students’ rights to education, decolonize academics from ableism, and create a disability-friendly university environment.
{"title":"Disability, Race, and Origin Intersectionality in the Doctoral Program: Ableism in Higher Education","authors":"Theodoto W. Ressa, S. Danforth","doi":"10.16993/sjdr.911","DOIUrl":"https://doi.org/10.16993/sjdr.911","url":null,"abstract":"This paper explores the experiences of a doctoral disabled student at a university to examine how ableist structures in graduate programs affect access to higher education and post-degree outcomes. Guided by the DisCrit framework and autoethnography approach, the article illuminates systems and processes that disadvantage graduate disabled students. Through intersectional analyses of disability, race, and origin, the article makes visible manifestations of disability microaggressions and systemic ableism, racism, and xenophobia. It interrogates the perpetuation and normalization of academic transgressions, including exclusionary practices that degrade and oppress graduate disabled students and hinder them from seeking success. Finally, the argument is made in favour of reforms to authenticate disability culture, validate students’ rights to education, decolonize academics from ableism, and create a disability-friendly university environment.","PeriodicalId":46073,"journal":{"name":"Scandinavian Journal of Disability Research","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43295365","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}
Md Irfanul Haque Siddiqui, Latif Arifudin, I. Alnaser, Khalid Alluhydan
The amputation of a lower limb for humans is one of the most traumatic experiences, both physically and emotionally. Prosthetic running blades provide disabled persons with an opportunity to participate in sports and thus help to improve their psychological health. They also allow them to participate in activities that were previously unavailable to them due to financial constraints. In the current study, we looked at how different materials affected the functionality of prosthetic running blades. We investigated the static behavior of a prosthetic running blade using finite element modeling. Under various load circumstances, we conducted numerical simulation using a variety of materials, including titanium alloy (grade 5), carbon fiber, stainless steel (AISI 316), and aluminum alloy (2024 T4). We studied three major load conditions: rest (700 N), walking (1400 N), and running (2200 N). To understand the performance depending on the selection of materials, we evaluated total deformation, equivalent stress, and strain energy in the design of our experiment. The titanium alloy is more durable and has a higher tensile strength. The high cost of manufacture for titanium alloy, however, is a major deterrent to its use in running blades. It was noticed that the aluminum alloy (2024 T4) blade goes under much deformation as compared to titanium and carbon fiber-made running blades. Furthermore, carbon fibers offer excellent mechanical properties, which are essential for creating running blades. It has outstanding tensile properties. Additionally, the low density of carbon fiber has the added advantage of making running blades lighter.
{"title":"Numerical Investigation on the Performance of Prosthetic Running Blades by Using Different Materials","authors":"Md Irfanul Haque Siddiqui, Latif Arifudin, I. Alnaser, Khalid Alluhydan","doi":"10.57197/jdr-2023-0001","DOIUrl":"https://doi.org/10.57197/jdr-2023-0001","url":null,"abstract":"The amputation of a lower limb for humans is one of the most traumatic experiences, both physically and emotionally. Prosthetic running blades provide disabled persons with an opportunity to participate in sports and thus help to improve their psychological health. They also allow them to participate in activities that were previously unavailable to them due to financial constraints. In the current study, we looked at how different materials affected the functionality of prosthetic running blades. We investigated the static behavior of a prosthetic running blade using finite element modeling. Under various load circumstances, we conducted numerical simulation using a variety of materials, including titanium alloy (grade 5), carbon fiber, stainless steel (AISI 316), and aluminum alloy (2024 T4). We studied three major load conditions: rest (700 N), walking (1400 N), and running (2200 N). To understand the performance depending on the selection of materials, we evaluated total deformation, equivalent stress, and strain energy in the design of our experiment. The titanium alloy is more durable and has a higher tensile strength. The high cost of manufacture for titanium alloy, however, is a major deterrent to its use in running blades. It was noticed that the aluminum alloy (2024 T4) blade goes under much deformation as compared to titanium and carbon fiber-made running blades. Furthermore, carbon fibers offer excellent mechanical properties, which are essential for creating running blades. It has outstanding tensile properties. Additionally, the low density of carbon fiber has the added advantage of making running blades lighter.","PeriodicalId":46073,"journal":{"name":"Scandinavian Journal of Disability Research","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84511107","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}
M. Alkahtani, H. Alqahtani, Sahar Ziedan Zaien, Tameem Melhem, Fay Naif Abdullah Alanazi
The present study aimed to investigate the prevalence of premenstrual syndrome (PMS) and premenstrual dysphoric disorder among deaf/hard-of-hearing women with mood disorders in Saudi Arabia. The study sample comprised 380 deaf/hard-of-hearing women with mood disorders, and a convenient sampling method was used. For data analysis, descriptive statistics were used. Percentage, frequency and standard deviation, Chi-square test, unpaired t-test, one-way analysis of variance, and Pearson’s correlation were used for quantitative and statistical logistic regression analysis. According to the Premenstrual Syndrome Scale, the prevalence of PMS (moderate to severe PMS) is 71.05%, and the prevalence of premenstrual dysphoric disorders is 16%. Women with moderate to severe PMS consume more French fries/snacks, more processed food, more candy, and less banana than women with low to moderate PMS do. They also have food with high sodium quantity and food with high carbs. They have more physical disease and pain during this period. They suffer more than others from diarrhea and loose stools during menstruation. They use benzodiazepines more than women with low to moderate PMS do.
{"title":"Prevalence of Premenstrual Syndrome and Premenstrual Dysphoric Disorder Among Deaf/Hard-of-Hearing Women with Mood Disorders in Saudi Arabia","authors":"M. Alkahtani, H. Alqahtani, Sahar Ziedan Zaien, Tameem Melhem, Fay Naif Abdullah Alanazi","doi":"10.57197/jdr-2023-0002","DOIUrl":"https://doi.org/10.57197/jdr-2023-0002","url":null,"abstract":"The present study aimed to investigate the prevalence of premenstrual syndrome (PMS) and premenstrual dysphoric disorder among deaf/hard-of-hearing women with mood disorders in Saudi Arabia. The study sample comprised 380 deaf/hard-of-hearing women with mood disorders, and a convenient sampling method was used. For data analysis, descriptive statistics were used. Percentage, frequency and standard deviation, Chi-square test, unpaired t-test, one-way analysis of variance, and Pearson’s correlation were used for quantitative and statistical logistic regression analysis. According to the Premenstrual Syndrome Scale, the prevalence of PMS (moderate to severe PMS) is 71.05%, and the prevalence of premenstrual dysphoric disorders is 16%. Women with moderate to severe PMS consume more French fries/snacks, more processed food, more candy, and less banana than women with low to moderate PMS do. They also have food with high sodium quantity and food with high carbs. They have more physical disease and pain during this period. They suffer more than others from diarrhea and loose stools during menstruation. They use benzodiazepines more than women with low to moderate PMS do.","PeriodicalId":46073,"journal":{"name":"Scandinavian Journal of Disability Research","volume":"32 5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77467643","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}
{"title":"“It’s Disgraceful Going through All this for Being an Arab and Disabled”: Intersectional and Ecological Barriers for Arabs with Disabilities in Israel","authors":"Leena Badran, Hira Amin, A. Gur, M. Stein","doi":"10.16993/sjdr.1002","DOIUrl":"https://doi.org/10.16993/sjdr.1002","url":null,"abstract":"","PeriodicalId":46073,"journal":{"name":"Scandinavian Journal of Disability Research","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67468614","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}
Faisal Asiri, J. Tedla, D. Sangadala, R. Reddy, M. Alshahrani, K. Gular, S. Dixit, V. Kakaraparthi, A. Nayak, Mohammed Abdullah Mohammed Aldarami, Osaid Saeed Alqhtani
Caregivers provide different types of care, such as physical care, transfers, and follow-ups with doctors and rehabilitation professionals. All these types of care impact the caregivers’ quality of life (QOL). Due to a lack of collective evidence on the QOL of caregivers having children with disabilities in the Kingdom of Saudi Arabia, we conducted this review to find the QOL of caregivers of children with disabilities. A thorough literature search was performed using an electronic database and a gray literature search to obtain relevant articles. These two distinct literature searches found a total of 233 studies. Out of these, 12 studies were on the QOL of caregivers with children with disabilities in Saudi Arabia. The methodological quality assessment of all 12 studies was done by using the quality assessment tool for observational cohort and cross-sectional studies. We established that caregivers of children with disabilities had a reduced QOL in the physical, psychological, and social relation domains. Factors such as gender, age, and low income impact the QOL among caregivers of children with disabilities.
{"title":"Quality of Life among Caregivers of Children with Disabilities in the Kingdom of Saudi Arabia: A Systematic Review","authors":"Faisal Asiri, J. Tedla, D. Sangadala, R. Reddy, M. Alshahrani, K. Gular, S. Dixit, V. Kakaraparthi, A. Nayak, Mohammed Abdullah Mohammed Aldarami, Osaid Saeed Alqhtani","doi":"10.57197/jdr-2023-0016","DOIUrl":"https://doi.org/10.57197/jdr-2023-0016","url":null,"abstract":"Caregivers provide different types of care, such as physical care, transfers, and follow-ups with doctors and rehabilitation professionals. All these types of care impact the caregivers’ quality of life (QOL). Due to a lack of collective evidence on the QOL of caregivers having children with disabilities in the Kingdom of Saudi Arabia, we conducted this review to find the QOL of caregivers of children with disabilities. A thorough literature search was performed using an electronic database and a gray literature search to obtain relevant articles. These two distinct literature searches found a total of 233 studies. Out of these, 12 studies were on the QOL of caregivers with children with disabilities in Saudi Arabia. The methodological quality assessment of all 12 studies was done by using the quality assessment tool for observational cohort and cross-sectional studies. We established that caregivers of children with disabilities had a reduced QOL in the physical, psychological, and social relation domains. Factors such as gender, age, and low income impact the QOL among caregivers of children with disabilities.","PeriodicalId":46073,"journal":{"name":"Scandinavian Journal of Disability Research","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78681750","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}
{"title":"Advancements and Challenges in Prosthetic Devices: Exploring Materials, Integration, and Future Directions","authors":"G. Elçadi","doi":"10.57197/jdr-2023-0007","DOIUrl":"https://doi.org/10.57197/jdr-2023-0007","url":null,"abstract":"","PeriodicalId":46073,"journal":{"name":"Scandinavian Journal of Disability Research","volume":"102 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76269381","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}
Md Irfanul Haque Siddiqui, Latif Arifudin, I. Alnaser, Ahmed Hassan, Khalid Alluhydan
Prosthetic running blades offer a solution for individuals with disabilities to engage in sports, benefiting them both psychologically and physiologically. Furthermore, a good prosthetic running blade in terms of performance and cost is rarely available to all disabled persons. In this study, we have examined how various materials impact the static behavior of the prosthetic running blade. A finite element numerical analysis was conducted on a prosthetic design to investigate this effect. We have used different materials for investigation such as aluminum alloy (2024 T4), stainless steel (AISI 316), carbon fiber, and titanium alloy (grade 5), under different load conditions. The load conditions have been varied mainly to three conditions, namely, rest (700 N), walking (1400 N), and running (2100 N). In our experimental design, we studied total deformation, equivalent stress, and strain energy to understand the performance based on material choice. It was noticed that the aluminum alloy (2024 T4) blade goes under much deformation when compared to titanium- and carbon fiber-made running blades. The least amount of overall deformation occurs in carbon fiber under varying load conditions. Carbon fiber appears to be the most profitable option due to its lowest cost per running blade. Titanium alloy grade 5, carbon fiber, AISI 316 stainless steel, and aluminum 2024 T4 alloy cost a total of 78.1, 48.5, 67.6, and 20.9 USD, respectively. It is evident that titanium alloy materials carry a higher price compared to alternative materials.
{"title":"Static Behavior of a Prosthetic Running Blade Made from Alloys and Carbon Fiber","authors":"Md Irfanul Haque Siddiqui, Latif Arifudin, I. Alnaser, Ahmed Hassan, Khalid Alluhydan","doi":"10.57197/jdr-2023-0010","DOIUrl":"https://doi.org/10.57197/jdr-2023-0010","url":null,"abstract":"Prosthetic running blades offer a solution for individuals with disabilities to engage in sports, benefiting them both psychologically and physiologically. Furthermore, a good prosthetic running blade in terms of performance and cost is rarely available to all disabled persons. In this study, we have examined how various materials impact the static behavior of the prosthetic running blade. A finite element numerical analysis was conducted on a prosthetic design to investigate this effect. We have used different materials for investigation such as aluminum alloy (2024 T4), stainless steel (AISI 316), carbon fiber, and titanium alloy (grade 5), under different load conditions. The load conditions have been varied mainly to three conditions, namely, rest (700 N), walking (1400 N), and running (2100 N). In our experimental design, we studied total deformation, equivalent stress, and strain energy to understand the performance based on material choice. It was noticed that the aluminum alloy (2024 T4) blade goes under much deformation when compared to titanium- and carbon fiber-made running blades. The least amount of overall deformation occurs in carbon fiber under varying load conditions. Carbon fiber appears to be the most profitable option due to its lowest cost per running blade. Titanium alloy grade 5, carbon fiber, AISI 316 stainless steel, and aluminum 2024 T4 alloy cost a total of 78.1, 48.5, 67.6, and 20.9 USD, respectively. It is evident that titanium alloy materials carry a higher price compared to alternative materials.","PeriodicalId":46073,"journal":{"name":"Scandinavian Journal of Disability Research","volume":"104 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80808454","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}
Faiz Alotaibi, Mrim M. Alnfiai, F. Al-Wesabi, Mesfer Alduhayyem, A. Hilal, M. A. Hamza
Aging is related to a decrease in the ability to execute activities of day-to-day routine and decay in physical exercise, which affect mental and physical health. Elderly patients or people can depend on a human activity recognition (HAR) system, which monitors the activity interventions and patterns if any critical event or behavioral changes occur. A HAR system incorporated with the Internet of Things (IoT) environment might allow these people to live independently. While the number of groups of activities and sensor measurements is enormous, the HAR problem could not be resolved deterministically. Hence, machine learning (ML) algorithm was broadly applied for the advancement of the HAR system to find the patterns of human activity from the sensor data. Therefore, this study presents an Optimal Deep Recurrent Neural Networks for Human Activity Recognition (ODRNN-HAR) on Elderly and Disabled Persons technique in the IoT platform. The intension of the ODRNN-HAR approach lies in the recognition and classification of various kinds of human activities in the IoT environment. Primarily, the ODRNN-HAR technique enables IoT devices to collect human activity data and employs Z-score normalization as a preprocessing step. For effectual recognition of human activities, the ODRNN-HAR technique uses the DRNN model. At the final stage, the optimal hyperparameter adjustment of the DRNN model takes place using the mayfly optimization (MFO) algorithm. The result analysis of the ODRNN-HAR algorithm takes place on benchmark HAR dataset, and the outcomes are examined. The comprehensive simulation outcomes highlighted the improved recognition results of the ODRNN-HAR approach in terms of different measures.
{"title":"Optimal Deep Recurrent Neural Networks for IoT-enabled Human Activity Recognition in Elderly and Disabled Persons","authors":"Faiz Alotaibi, Mrim M. Alnfiai, F. Al-Wesabi, Mesfer Alduhayyem, A. Hilal, M. A. Hamza","doi":"10.57197/jdr-2023-0023","DOIUrl":"https://doi.org/10.57197/jdr-2023-0023","url":null,"abstract":"Aging is related to a decrease in the ability to execute activities of day-to-day routine and decay in physical exercise, which affect mental and physical health. Elderly patients or people can depend on a human activity recognition (HAR) system, which monitors the activity interventions and patterns if any critical event or behavioral changes occur. A HAR system incorporated with the Internet of Things (IoT) environment might allow these people to live independently. While the number of groups of activities and sensor measurements is enormous, the HAR problem could not be resolved deterministically. Hence, machine learning (ML) algorithm was broadly applied for the advancement of the HAR system to find the patterns of human activity from the sensor data. Therefore, this study presents an Optimal Deep Recurrent Neural Networks for Human Activity Recognition (ODRNN-HAR) on Elderly and Disabled Persons technique in the IoT platform. The intension of the ODRNN-HAR approach lies in the recognition and classification of various kinds of human activities in the IoT environment. Primarily, the ODRNN-HAR technique enables IoT devices to collect human activity data and employs Z-score normalization as a preprocessing step. For effectual recognition of human activities, the ODRNN-HAR technique uses the DRNN model. At the final stage, the optimal hyperparameter adjustment of the DRNN model takes place using the mayfly optimization (MFO) algorithm. The result analysis of the ODRNN-HAR algorithm takes place on benchmark HAR dataset, and the outcomes are examined. The comprehensive simulation outcomes highlighted the improved recognition results of the ODRNN-HAR approach in terms of different measures.","PeriodicalId":46073,"journal":{"name":"Scandinavian Journal of Disability Research","volume":"62 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81443963","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}
U. Umer, S. H. Mian, K. Moiduddin, Hisham Alkhalefah
Three-dimensional (3D) printing, especially using fused deposition modeling, is becoming more and more popular in the medical sector because of its exceptional advantages. While it has been used for prototyping, 3D printing has not yet been completely explored to produce a functional product. The key causes are the abundance of 3D printing materials and the lack of a comprehensive study outlining the design process. Consequently, this paper describes a reverse engineering (RE) design approach based on data acquisition utilizing laser scanning and splint design from the acquired point cloud data. This study also focuses on the evaluation of various wrist orthosis/splint designs and materials using finite element (FE) analysis in order to improve upon the conventional approach. Sixty FE analysis simulations are undertaken in flexion–extension and radial–ulnar wrist movements to investigate the displacements and the stresses. The splint is then fabricated utilizing the material and thickness that have been specified by FE analysis. The major goals of this study are to examine the RE design methodology, explore various materials, and assess the viability of 3D printing. The polylactic acid (PLA) hand splint has proven to be the sturdiest in terms of average displacements when compared to the other materials, followed by polyethylene terephthalate glycol (PETG), acrylonitrile butadiene styrene (ABS), polypropylene, and thermoplastic polyurethanes. According to simulation data, the PLA splint has 38.6%, 38.8%, 38.5%, and 38.7% less displacement in the major loading direction in flexion, extension, radial, and ulnar, respectively, than the ABS splint. Moreover, the PLA-based hand splint has a peak stress value below the yield strength of PLA, rendering it reliable for patients to wear. Also, it turns out that PETG and ABS behave rather similarly. Furthermore, it has been shown that a balanced approach can reduce material use and building time. For instance, employing PLA and a thickness of 2 mm results in reduced material costs without compromising the effectiveness of the splint. As a result, choosing the right material and splint thickness can help the 3D-printed hand splint perform better.
{"title":"Exploring Orthosis Designs for 3D Printing Applying the Finite Element Approach: Study of Different Materials and Loading Conditions","authors":"U. Umer, S. H. Mian, K. Moiduddin, Hisham Alkhalefah","doi":"10.57197/jdr-2023-0011","DOIUrl":"https://doi.org/10.57197/jdr-2023-0011","url":null,"abstract":"Three-dimensional (3D) printing, especially using fused deposition modeling, is becoming more and more popular in the medical sector because of its exceptional advantages. While it has been used for prototyping, 3D printing has not yet been completely explored to produce a functional product. The key causes are the abundance of 3D printing materials and the lack of a comprehensive study outlining the design process. Consequently, this paper describes a reverse engineering (RE) design approach based on data acquisition utilizing laser scanning and splint design from the acquired point cloud data. This study also focuses on the evaluation of various wrist orthosis/splint designs and materials using finite element (FE) analysis in order to improve upon the conventional approach. Sixty FE analysis simulations are undertaken in flexion–extension and radial–ulnar wrist movements to investigate the displacements and the stresses. The splint is then fabricated utilizing the material and thickness that have been specified by FE analysis. The major goals of this study are to examine the RE design methodology, explore various materials, and assess the viability of 3D printing. The polylactic acid (PLA) hand splint has proven to be the sturdiest in terms of average displacements when compared to the other materials, followed by polyethylene terephthalate glycol (PETG), acrylonitrile butadiene styrene (ABS), polypropylene, and thermoplastic polyurethanes. According to simulation data, the PLA splint has 38.6%, 38.8%, 38.5%, and 38.7% less displacement in the major loading direction in flexion, extension, radial, and ulnar, respectively, than the ABS splint. Moreover, the PLA-based hand splint has a peak stress value below the yield strength of PLA, rendering it reliable for patients to wear. Also, it turns out that PETG and ABS behave rather similarly. Furthermore, it has been shown that a balanced approach can reduce material use and building time. For instance, employing PLA and a thickness of 2 mm results in reduced material costs without compromising the effectiveness of the splint. As a result, choosing the right material and splint thickness can help the 3D-printed hand splint perform better.","PeriodicalId":46073,"journal":{"name":"Scandinavian Journal of Disability Research","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88341473","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}
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