jumaa chiad

Al Nahrain University - IRAQ, Prosthetics & Orthotics Engineering, Faculty Member

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Afsin Alper Cerit

Erciyes University

Cabbar Veysel Baysal

Cukurova University

Ajit Behera

National Institute of Technology Rourkela

Pablo Alvarez-Alonso

University of Oviedo / Universidad de Oviedo

Ahmed Shash

Cairo University

Marina Daragan

Institute of archaeology of the NASU

Noor Azuan Abu Osman

Universiti Malaya

mahmoud hafiz

Al-Azhar University

Kerem Altug Guler

Yildiz Technical University

CHANDRA S PERUGU

Indian Institute of Science

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Papers by jumaa chiad

Analysis and Mitigation of Hand Arm Power Tools Vibration

Journal of engineering and sustainable development, 2016

Vibration Measurement and Analysis of knee-Ankle-Foot Orthosis (KAFO) Metal-Metal type

The Journal of Engineering, 2014

Vibration Measurement And Analysis Of Knee-Ankle-Foot Orthosis (Kafo) Plastic-Metal Type

The aim of present paper is to measure the stresses that results from vibration for knee-Ankle-Fo... more The aim of present paper is to measure the stresses that results from vibration for knee-Ankle-Foot-orthosis (KAFO) at different position during dress up by patient by measuring of accelerometer of (KAFO).Also the pressure between leg and knee -AnkleFoot-orthosis was measured by using piezoelectric sensor. Total stresses result from applied pressure and acceleration on the KAFO numerically calculated with ANSYS 14 package. The results showed that the values of stresses at the upper KAFO (thigh) are greater than the lower KAFO(shank).this is certainly because of the values of pressure in the upper leg

Modeling and Evaluation of Smart Economic Transfemral Prosthetic

Defect and Diffusion Forum, 2020

This study deals with evaluation of smart economic transfemral Prosthetic consist of a new design... more This study deals with evaluation of smart economic transfemral Prosthetic consist of a new design and manufacturing of knee joint and design and manufacture of a simple electronic circuit that is programmed to control the muscle pressure on the sensor during movement and transfer the voltage of force sensor after processing in microcontroller to the electric motor to flexion and extend the knee joint. A number of tests were carried out to evaluate the smart prosthetic. Gait cycle and EMG tests were performed on a patient with amputation above the knee in two cases, the first is when the patient is wearing the traditional limb and the second is when the patient is wearing the smart prosthetic. The results showed that the gait cycle during the wearing of the smart prosthetic is more acceptable, stable and balanced than the case of the traditional prosthetic wear. The results of EMG test showed that muscles need less effort during movement when wearing a smart limb and this indicates t...

Evaluation and Analysis of Different Types of Prosthetic Knee Joint Used by above Knee Amputee

Defect and Diffusion Forum, 2020

Four prosthetic knee joints (polycentric knee weight activating-4bar and friction, extension assi... more Four prosthetic knee joints (polycentric knee weight activating-4bar and friction, extension assist controlled),(single axis knee weight activating and friction, internal extension assist controlled), (single axis knee weight activating-4bar and hydraulically, controlled) and (polycentric knee geometric locking-6bar, hydraulically controlled) for a trans-femoral patient were tested. The tests were conducted to find the maximum velocity as well as discussing the most comfortable prosthetic forthe patient and walking stability for these prosthetic knees by examining the gait cycle and measuring the ground reaction force (GRF), using force a plate device. Also, the interface pressure was measured between socket and stump muscles by using F-socket device to get the stress distribution during walking with a prosthetic knee. Results manifested that the polycentric knee geometric locking - 6bar, hydraulically controlled is the best because of the good homogenous distribution of GRF between...

Design And Manufacturing Knee Joint for Smart Transfemoral Prosthetic

IOP Conference Series: Materials Science and Engineering, 2018

A well-designed lower limb prosthesis is necessary in order to permit an amputee to repeat to hea... more A well-designed lower limb prosthesis is necessary in order to permit an amputee to repeat to healthy locomotion. The aim of this study is to enhance the passive prosthesis to a microcontroller-based transfemoral prosthesis which was unable to reach the designated rotational speed intended for a functional use, and had low cost. The enhancement focuses on designing a new mechanism on the knee joint by using a pre-existed DC motor, a socket, and the foot obtainable from the previous design. This involves mimicking the normal limb function and to improve the range of motion of this knee prosthesis. There are some criteria that required to be achieve at this study such as the new proposed knee joint should be able to flexion up to 90 O and has enough strength to bear up the amputee's body weight. Solid Works software was used to design every single part of the knee joint. Then, each part will be assembled and the mechanism of the knee joint will be simulated for visualize the imagine motion of new model of hinged knee prosthesis. The materials (Aluminium Alloy 6061, Aluminium Alloy 7075 and AISI 4130 Steel) used were chosen by taking the consideration the cost and the properties of that material. By ANSYS computer program (Finite element analysis) was performed and the conclusion were evaluated to discover if the proposed prosthesis can bear certain loads. The results were discussed and evaluated the new model that suggested by this study.

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Vibration Analysis and Measurement in Knee Ankle Foot Orthosis for Both Metal and Plastic KAFO Type

Volume 3B: Biomedical and Biotechnology Engineering, 2013

A standard knee-ankle-foot orthosis (KAFO) is typically prescribed to support the limb during loc... more A standard knee-ankle-foot orthosis (KAFO) is typically prescribed to support the limb during locomotion, during which (KAFO) is used for people with isolated quadriceps weakness or paralysis. In this paper the measurement applied on girl undergoing palsy children in her left leg as a case study. The first pathological concern is of age, weight, length and the residual palsy limb of 30 years old, 59kg, 156 cm, and 76 cm respectively, while the second test done is on man suffering flexion knee and shorten left leg due to injection by a needle in a wrong position when he was a child. The pathological concern is of age, weight, length and the residual defect limb of 35years, 82kg, 172 cm, and 80 cm respectively. This work involves two major parts: the first of which is the experimental part to measure the ground reaction force for both healthy and intake legs. The interface pressure between leg and calf part is measured for twelve points covering the total KAFO surface area, while the ...

Kinematic analysis for passive multi-axes ankle joint

Pollack Periodica

The commercially available and research-developed positive-type ankle joints do not provide evers... more The commercially available and research-developed positive-type ankle joints do not provide eversion and inversion movements and are limited to dorsiflexion and plantar-flexion. The aim of the research is to create an ankle joint that is simple to install, low in cost and closes in performance to the biological joint. The passive ankle joint is designed to perform dorsiflexion, plantar-flexion, eversion, and inversion movements. A biomechanical test was performed to find the similarity between the functions of the engineered ankle joint and the biological ankle joint. The conclusions show, the designed ankle joint on the simplicity of its structure and components, has come close to the biological function of the ankle in terms of angles.

The mathematical model for lateral stiffness of variable length conical spring

Pollack Periodica

One form of energy storage in spring is applying a bending moment and converting it into tilt at ... more One form of energy storage in spring is applying a bending moment and converting it into tilt at the head of the spring as strain energy. The relationship between them is the lateral stiffness of the spring. The aim is to find a mathematical equation for the lateral stiffness of the spring and the effect of the length of the spring on the behavior of stiffness. The mathematical model is created according to Castigliano’s second theorem. A simulated model of a conical spring is built using a Solid Work program. The theoretical results are compared with the mathematical model for the same conical spring. Results of both theoretical and simulated models evinced a linear behavior of lateral, while an exponential relationship between the length of the spring and the lateral stiffness is indicated. The difference between theoretical and simulated models is not exceeded 3.2%, which indicates the acceptability of results.

持続血糖モニタリングシステム cgms での血糖変動性はst上昇型心筋梗塞患者における梗塞サイズと関係している

日本心血管インターベンション治療学会誌, 2014

Incremental Forming of AA8006 Aluminum Alloys Sheet with Different Step Size

Materials Science Forum, 2021

The main objects of this paper are to deal with the new technology of metal sheet forming using t... more The main objects of this paper are to deal with the new technology of metal sheet forming using the incremental single-point tool to form the sheet metal. However, due to the needed long time to form the metal in incremental so that we used punching and then incremental forming to geometry the final shape of the product. By measuring the thickness and longitudinal strain and evaluating the hoop strain, it was noticed that the less depth in punching with less step size in incremental forming have a better strain effect in metal sheet forming. Keywords: Single point, incremental forming, Strain analysis, step size.

The Role of Stakeholders to Help SMEs Which Is Affected by Covid 19 Through Penta Helix Synergy in Banyuwangi District

The development of tourism and SMEs is constrained by the outbreak of pneumonia which is a new co... more The development of tourism and SMEs is constrained by the outbreak of pneumonia which is a new coronavirus. Starting in March 2020 tourism in the Banyuwangi Regency is closed, shopping centers are restricted in operating hours. With the closure of tourism has an impact on the number of tourists visiting Banyuwangi which has dropped significantly and has an impact on SMEs in Banyuwangi Regency. MSME products produced in Banyuwangi Regency are widely marketed at the center of souvenirs, tourist attractions, and exhibitions held at each festival event. The exhibition which is usually held to attract tourists can no longer be held, so that SMEs cannot sell their products anymore. The number of tourists has dropped significantly, and there are no buyers for souvenir shops, so many SMEs have stopped producing because many products are not sold. To help SMEs to cope with the COVID-19 pandemic, synergy or good cooperation from various elements is needed to achieve the goal using the helix a...

Investigation of Vertical Ground Reaction Force during Walking with the Exoskeleton for Patient with Unilateral Lower Limb Weakness

Proceedings of 2nd International Multi-Disciplinary Conference Theme: Integrated Sciences and Technologies, IMDC-IST 2021, 7-9 September 2021, Sakarya, Turkey, 2022

Using lower extremity exoskeletons in the healthcare field like for rehabilitation is a substanti... more Using lower extremity exoskeletons in the healthcare field like for rehabilitation is a substantial application. Lower limb exoskeletons can help in performing specific functions like gait assistance, and physical therapy support for patients who are lost their ability to walk again. The ground reaction force characteristics during human walking can be an important descriptor of gait disorders. The purpose of this study is to reveal the effect of the designed lower limb exoskeleton on the patient with right lower limb weakness based on the investigation of the ground reaction force. Results show that dynamic asymmetry practically disappears in the vertical GRF between the left and right legs during walking using the exoskeleton. The symmetry between the left and right limbs when walking using the exoskeleton for the maximum vertical GRF (first peak) is 98.9%, the minimum vertical GRF (the valley) is 99%, and the maximum vertical GRF (second peak) is 97.48%.

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Hydrothermal Effect Study on the Amputee Comfort for the Above Knee Prosthetic Socket

Design ,Manufacturing ,and Analysis of the Above Knee Prosthetic Socket Using Carbon Nanopwoder and its Effect on the Amputee Comfort

Article Info

The hard workers are usually suffering from big medical problems after working with vibrating equ... more The hard workers are usually suffering from big medical problems after working with vibrating equipment such as compressor and different type of drills.These troubles give a big engorgement to study,measuring and analysis the vibration data resulting from the hard worker hand that is in touch with this vibrating equipment. This work studies the frequency and acceleration that will be measured at command,wrist, elbow, and shoulder in the human arm of hard works with different foundation boundary condition. The measuring of the vibration data in the human arm of hard workers is based namely on design and manufacturing a vibration measurement system according to international standard ( ISO 28927-10) which consists of foundation structure, working structure,drill,worker arm and vibration measuring system. The suggested vibration measurement system was used to measure vibration in the hard worker arm as a case study.The worker is of age, weight, length and arm length of 26 years, 85kg, ...

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Analysis and Evaluation of a Quasi-Passive Lower Limb Exoskeleton for Gait Rehabilitation

Al-Khwarizmi Engineering Journal, 2021

Using lower limb exoskeletons in healthcare sector like for rehabilitation is an important applic... more Using lower limb exoskeletons in healthcare sector like for rehabilitation is an important application. Lower limb exoskeletons can help in performing specific functions like gait assistance, and physical therapy support for patients who are lost their ability to walk again. Since active lower limb exoskeletons require more complicated control instrumentation and according to the limitations of the power/weight ratio that arises in such exoskeletons, many quasi-passive systems have developed and employed. This paper presents the design and testing of lightweight and adjustable two degree of freedom quasi-passive lower limb exoskeleton for improving gait rehabilitation. The exoskeleton consists of a high torque DC motor mounted on a metal plate above the hip joint, and a link that transmit assistance torque from the motor to the thigh. The knee joint is passively actuated with spring. The action of the passive component (spring) is combined with mechanical output of the motor to prov...

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Boosting Mechanical Properties of Orthoses - Foot Ankle by Adding Carbon Nanotube Particles

Materials Science Forum, 2021

In this process, optimum laminating properties were used in producing prosthesis and orthoses wer... more In this process, optimum laminating properties were used in producing prosthesis and orthoses were researched and selected based on high yield, ultimate stresses, stresses of bending and fatigue properties. The process of the optimal selection is the Response Surface Methodology (RSM), which has been used to reach two parameters: reinforcement perlon fiber and percent of multi-strand carbon MWCNT nanotube combined with the matrix resin. The response surface methodology is a combination of mathematician and statistic techniques which are used for experimental model building and analysis of problems. This technique revealed 13 separate laminations samples with a percentage of separate Perlon layers No. and MWCNT Wt %. Tests were conducted for all lamination materials as defined in RSM methods and rendered by vacuum system, including fatigue tests for the ideal laminating material as opposed to laminations developed in the prior study (three Tensile test, Bending test and Fatigue tests...

Enhancement of the mechanical properties for above-knee prosthetic socket by using the bamboo fiber

Researchesspecialized in manufacturing of prostheses showed a major development in improving the ... more Researchesspecialized in manufacturing of prostheses showed a major development in improving the mechanical and physical properties in the trend to get the best mechanical specifications, lighter in weight, lower cost and ease of manufacturing. For this purpose this research includes manufacture of above the knee prosthetic socket of lamination of four layers consisting of (1 bamboo 2 fiber carbon 1 bamboo) instead of lamination of ten layers which consist of (4 perlon 2 fiber carbon 4 perlon) which is most commonly used in the manufacture of prosthetic socket at the moment. Tensile test and fatigue test were conducted, as well as interference testing pressure between the residual limb of leg of the patient with socket by device F-Socket to use these pressures later as boundary condition in the simulation program ANSYS 14.5, which will simulate the distribution of Von-Mises stresses, values of deformation and the factor of safety for both available and proposed sockets. The results ...

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Characteristic of Specific Industrial Application

The shot peening process used mainly to hardened the surface and increases the fatigue life of th... more The shot peening process used mainly to hardened the surface and increases the fatigue life of the rotating parts . This cold treatment will change the designed natural frequency of the part and change the vibration characteristics . Especially when this parts are driven by a high speed velocities. This research investigates the behavior of the vibrations after a superficial treatment done by shot peening. An experimental test rig was manufactured, and different industrial applications and geometries have been tested and treated by shot peening process. Three important commonly used industrial applications are selected to study and investigate its vibration characteristic after shot peening treatment namely connecting rod, crankshaft, and supercharger shaft for a (3Kv) generator. Vibration parameters such as acceleration velocity and displacement for specific time duration was recorded and analyzed also, the natural frequency and first six mode shape . The fundamental increases afte...

Analysis and Mitigation of Hand Arm Power Tools Vibration

Journal of engineering and sustainable development, 2016

Vibration Measurement and Analysis of knee-Ankle-Foot Orthosis (KAFO) Metal-Metal type

The Journal of Engineering, 2014

Vibration Measurement And Analysis Of Knee-Ankle-Foot Orthosis (Kafo) Plastic-Metal Type

Modeling and Evaluation of Smart Economic Transfemral Prosthetic

Defect and Diffusion Forum, 2020

Evaluation and Analysis of Different Types of Prosthetic Knee Joint Used by above Knee Amputee

Defect and Diffusion Forum, 2020

Design And Manufacturing Knee Joint for Smart Transfemoral Prosthetic

IOP Conference Series: Materials Science and Engineering, 2018

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Vibration Analysis and Measurement in Knee Ankle Foot Orthosis for Both Metal and Plastic KAFO Type

Volume 3B: Biomedical and Biotechnology Engineering, 2013

Kinematic analysis for passive multi-axes ankle joint

Pollack Periodica

The mathematical model for lateral stiffness of variable length conical spring

Pollack Periodica

持続血糖モニタリングシステム cgms での血糖変動性はst上昇型心筋梗塞患者における梗塞サイズと関係している

日本心血管インターベンション治療学会誌, 2014

Incremental Forming of AA8006 Aluminum Alloys Sheet with Different Step Size

Materials Science Forum, 2021

The Role of Stakeholders to Help SMEs Which Is Affected by Covid 19 Through Penta Helix Synergy in Banyuwangi District

Investigation of Vertical Ground Reaction Force during Walking with the Exoskeleton for Patient with Unilateral Lower Limb Weakness

Proceedings of 2nd International Multi-Disciplinary Conference Theme: Integrated Sciences and Technologies, IMDC-IST 2021, 7-9 September 2021, Sakarya, Turkey, 2022

Download

Hydrothermal Effect Study on the Amputee Comfort for the Above Knee Prosthetic Socket

Design ,Manufacturing ,and Analysis of the Above Knee Prosthetic Socket Using Carbon Nanopwoder and its Effect on the Amputee Comfort

Article Info

Download

Analysis and Evaluation of a Quasi-Passive Lower Limb Exoskeleton for Gait Rehabilitation

Al-Khwarizmi Engineering Journal, 2021

Download

Boosting Mechanical Properties of Orthoses - Foot Ankle by Adding Carbon Nanotube Particles

Materials Science Forum, 2021

Enhancement of the mechanical properties for above-knee prosthetic socket by using the bamboo fiber

Download

Characteristic of Specific Industrial Application

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