KETEGUHAN LENTUR DAN KETEGUHAN PATAH SAMBUNGAN FINGER JOINT KAYU MERANTI (Shorea sp) PADA POSISI SAMBUNGAN VERTIKAL & HORIZONTAL

Iskandar; Joko Priyono;  Yusdiansyah

doi:10.51967/tanesa.v22i2.889

KETEGUHAN LENTUR DAN KETEGUHAN PATAH SAMBUNGAN FINGER JOINT KAYU MERANTI (Shorea sp) PADA POSISI SAMBUNGAN VERTIKAL & HORIZONTAL

Buletin Poltanesa ◽

10.51967/tanesa.v22i2.889 ◽

2021 ◽

Vol 22 (2) ◽

Author(s):

Iskandar ◽

Joko Priyono ◽

Yusdiansyah

Keyword(s):

Finger Joint

Keterbatasan panjang kayu yang tersedia dilapangan mengharuskan bahan elemen sruktur disambung. Namun semakin panjang bahan elemen struktur tersebut, gaya lentur yang akan terjadi akan semakin besar bahkan dapat mengakibatkan patah bila beban yang bekerja pada bahan tersebut tidak seimbang dengan kemampuan dari pada bahan tersebut. Untuk itu perlu diteliti jenis sambungan yang bisa menahan gaya lentur dengan lebih baik. Proses pengujian penelitian ini menggunakan kayu solid dan papan finger joint yang dipotong dengan ukuran 2 cm x 5 cm x 20 cm masing masing sebanyak 15 pengulangan setiap pengujian. Pengujian yang dilakukan antara lain pengujian kadar air, pengujian kerapatan, pengujian MoE dan yang terakhir yaitu pengujian MoR.Dari hasil pengujian MoR dan MoE papan finger joint, didapat bahwa nilai MoE finger joint meningkat 31,75 % terhadap nilai MoE kayu utuh, sedangkan untuk MoR finger joint telah menurun sebesar 24,14 % terhadap MoE kayu utuhnya.

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Long-term results after vascularized joint transfer for finger joint reconstruction

Tijdschrift voor Geneeskunde ◽

10.2143/tvg.60.23.5002050 ◽

2004 ◽

Vol 60 (23) ◽

pp. 1737-1743 ◽

Cited By ~ 1

Author(s):

HIERNER R

Keyword(s):

Finger Joint ◽

Long Term Results ◽

Joint Reconstruction

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Verification of Finger Joint Stiffness Estimation Method With Soft Robotic Actuator

Frontiers in Bioengineering and Biotechnology ◽

10.3389/fbioe.2020.592637 ◽

2020 ◽

Vol 8 ◽

Author(s):

Xiang Qian Shi ◽

Ho Lam Heung ◽

Zhi Qiang Tang ◽

Kai Yu Tong ◽

Zheng Li

Keyword(s):

Estimation Method ◽

Joint Stiffness ◽

Ground Truth ◽

Clinical Score ◽

Metacarpophalangeal Joint ◽

Finger Joint ◽

Joint Torque ◽

Hand Rehabilitation ◽

Stiffness Characteristic ◽

Modified Ashworth Scale

Stroke has been the leading cause of disability due to the induced spasticity in the upper extremity. The constant flexion of spastic fingers following stroke has not been well described. Accurate measurements for joint stiffness help clinicians have a better access to the level of impairment after stroke. Previously, we conducted a method for quantifying the passive finger joint stiffness based on the pressure-angle relationship between the spastic fingers and the soft-elastic composite actuator (SECA). However, it lacks a ground-truth to demonstrate the compatibility between the SECA-facilitated stiffness estimation and standard joint stiffness quantification procedure. In this study, we compare the passive metacarpophalangeal (MCP) joint stiffness measured using the SECA with the results from our designed standalone mechatronics device, which measures the passive metacarpophalangeal joint torque and angle during passive finger rotation. Results obtained from the fitting model that concludes the stiffness characteristic are further compared with the results obtained from SECA-Finger model, as well as the clinical score of Modified Ashworth Scale (MAS) for grading spasticity. These findings suggest the possibility of passive MCP joint stiffness quantification using the soft robotic actuator during the performance of different tasks in hand rehabilitation.

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Application Study on Finger Joint Motion in Rehabilitation Training

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.644-650.879 ◽

2014 ◽

Vol 644-650 ◽

pp. 879-883

Author(s):

Jing Jing Yu

Keyword(s):

Control Method ◽

Finger Joint ◽

Continuous Passive Motion ◽

Joint Motion ◽

Joint Movement ◽

Rehabilitation Training ◽

Angle Data ◽

Finger Flexion ◽

And Control ◽

Flexion And Extension

In various forms of movement of finger rehabilitation training, Continuous Passive Motion (CPM) of single degree of freedom (1 DOF) has outstanding application value. Taking classic flexion and extension movement for instance, this study collected the joint angle data of finger flexion and extension motion by experiments and confirmed that the joint motion of finger are not independent of each other but there is certain rule. This paper studies the finger joint movement rule from qualitative and quantitative aspects, and the conclusion can guide the design of the mechanism and control method of finger rehabilitation training robot.

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