Effects of Ultraviolet Radiation with and Without Heat on the Fatigue Behavior of Below-Knee Prosthetic Sockets
Journal Title: International Journal of Mechanical and Production Engineering Research and Development (IJMPERD ) - Year 2017, Vol 7, Issue 6
Abstract
This work focused on below-knee (BK) prosthetic sockets, which have gained wide application due to the increasing number of patients with BK amputation as a result of terrorist attacks and life-threatening situations in warstricken areas, such as Iraq. Given the hot weather in Iraq, a number of studies have explored the effects of temperature on specific socket materials. The current study attempts to explain the effects of ultraviolet (UV) radiation, in combination with temperature, on the properties of socket materials. In the experimental work, two sets of specimens, namely, Material A (acrylic resin and hardener reinforced with 10 layers of perlon, and Material B (acrylic resin and hardener reinforced with 8perlon layers and2carbon fibers), were manufactured using a vacuum technique. The socket materials were subjected to tensile testing to obtain their mechanical properties. The failure characteristics of sockets were determined by fatigue testing using a machine (alternating bending fatigue) manufactured specially for this purpose. Fatigue testing was carried out in four different exposure environments (at room temperature with and without UV radiation and at 50 °C with and without UV radiation). Interface pressure between the stump and the socket was measured using an F-socket device. In the numerical study, a prosthetic socket was drawn by using AUTOCAD software. Finite element technique (ANSYSWorkbench 15) was used to analyze and evaluate the fatigue characteristics by observing the maximum stress, total deformation, and safety factor. Results show that the modulus of elasticity (19.7), ultimate tensile strength, and yield stress of socket material sunder group B were superior to those of group A. The material with carbon fiber reinforcement showed the highest fatigue limit and safety factor values (5.0638, 4.6565, 5.0424, and 4.4613). However, the combined effect of temperature and UV radiation decreased the safety factors and rendered the materials of group A as unsafe. The equivalent von Mises stress reached a maximum of16.9MPaand was centered at the anterior side of the tibia bone.
Authors and Affiliations
Zainab Yousif Hussien, Kadhim Kamil Resan
Keywords
Related Articles
- EP ID EP257110
- DOI -
- Views 73
- Downloads 0
Review: Effects of Inlet Conditions on Diffuser Performance
This paper presents the effects of various geometrical as well as fluid dynamics governing parameters on diffusers performance with significance on the inlet conditions for different area ratio in diffusers. The effects...
Damping Improvement of a Cantilever Beam using Two Patches of Tubes Fluidic Flexible Matrix Composite
Fluidic Flexible Matrix Composite (F2MC) tubes are promising fiber reinforced tubes, they can passively provide damping and vibration absorption. This study focuses on analyzing F2MC tube’s response to add damping to can...
An Experimental Investigation and Process Parameters Optimization of Friction Stir Welded Dissimilar Alloys
In this present study, FSW is joining the two dissimilar aluminum alloy sheets (AA6063 and AA5052) to examine on the hardness. The experimental method Taguchi L9 orthogonal is implemented to create the amount of welding...
A CASE STUDY ON RESPONSE OF ALLOY GEAR STEELS TO CASE CARBURIZING AND IT’S EFFECT ON WEIGHT OPTIMIZATION OF A TRANSMISSION SYSTEM
The strength of a material is a very crucial design parameter from an engineer’s standpoint for designing a mechanical system with a primary design objective of optimization or minimization of system weight. This is part...
A STUDY ON THE FACTORS INFLUENCING THE JOB STRESS OF PRODUCTION ENGINEERS IN THE AUTOMOBILE COMPANIES IN CHENNAI
Job Stress or Occupational Stress is considered to be the daily aspect of modern day work in the organizations. The job stress is an area which has been extensively researched around the world in the modern day industria...