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All Journal Rotasi Journal of Mechanical Engineering Science and Technology
Jamari, J
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Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Control Design of Automatic Inflatable Vest for Deep Pressure Therapy Husaini, Farhan; Maula, Mohammad; Ammarullah, Muhammad; Afif, Ilham; Lamura, M Danny; Winarni, Tri Indah; Jamari, J
ROTASI Vol 26, No 1 (2024): VOLUME 26, NOMOR 1, JANUARI 2024
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/rotasi.26.1.28-34

Abstract

This research focuses on enhancing the control system of the commercial inflatable vest to optimize pressure regulation for deep pressure therapy (DPT) in children with autism spectrum disorder (ASD). The main goal is to provide a safe and reliable DPT experience with calming effects. The proposed control system incorporates a feedback loop mechanism to maintain the desired pressure level and includes safety features to prevent overinflation. The study dis-cusses the development of the pressure control system, covering both hardware and software components. Experimental results demonstrate the system's effectiveness in maintaining the target pressure with the average error is 1.531%. This study has successfully advanced deep pressure therapy devices, emphasizing the significance of automatic pressure control that meets the criteria for medical gas pressure (error no greater than 5%) and incorporates safety features as a therapy device.
Wear Property of Machined Ultra High Molecular Weight Polyethylene (UHMWPE) Acetabular Liner Product with CNC Milling Lestari, Wahyu Dwi; Danaryanto, A T; Nugroho, A; Ismail, R; Jamari, J; Bayuseno, A P
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 5, No 2 (2021)
Publisher : Universitas Negeri Malang

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Abstract

UHMWPE has been used as a cushion in artificial hip joint for the last decades. The reliability of the components of a hip joint implant can be achieved by understanding their wear behavior. This study observed the tribological performance of the UHMWPE acetabular liner manufactured with a CNC milling machine on the femoral head made of SS 316L. Materials commonly used for tribo pairs in hip joint replacement. The wear tests were performed on a hip joint simulator in dry condition. The wear test is carried out by applying a constant load of 800N. Before and after the wear test, measurements of surface roughness and dimensional accuracy were carried out on the UHMWPE acetabular liner specimen. The correlation between the surface roughness of the machining process and the wear rate is seen from the value of the wear depth and the wear coefficient obtained. The results showed that the machining process affects the surface roughness of the acetabular liner, where the roughness also affects the wear rate of acetabular liner product.
Co-Authors Afif, Ilham Ammarullah, Muhammad Bayuseno, A P Danaryanto, A T Husaini, Farhan Ismail, R Lamura, M Danny Maula, Mohammad Nugroho, A Tri Indah Winarni Wahyu Dwi Lestari