The composite structure for human body impact protection

2021 ◽  
pp. 113763
Author(s):  
Pacek Dawid ◽  
Rutkowski Jacek
Keyword(s):  
Human Body ◽  
Composite Structure ◽  
Impact Protection

scholarly journals Developing Fall-impact Protection Pad with 3D Mesh Curved Surface Structure using 3D Printing Technology

Polymers ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 1800 ◽  
Author(s):  
Park ◽  
Lee
Keyword(s):  
3D Printing ◽  
Human Body ◽  
Curved Surface ◽  
Printing Technology ◽  
Mesh Structure ◽  
3D Printing Technology ◽  
Spacer Fabric ◽  
Impact Protection ◽  
Scan Data ◽  
The Impact

In this study, we present the development of fall-impact protection pads for elderly people using three-dimensional (3D) printing technology. To develop fall-impact protection clothing, it is important to maintain the functionality of the protection pad while ensuring that its effectiveness and appearance remain optimal in the process of inserting it. Therefore, this study explores the benefit of exploiting 3D scan data of the human body using 3D printing technology to develop a fall-impact protection pad that is highly suited to the human body shape. The purpose of this study was to present a 3D modeling process for creating curved protective pads comprising a hexagonal mesh with a spacer fabric structure and to verify the impact protection performance by printing curved pads. To this end, we set up a section that includes pads in the 3D human body scan data and extracted body surface information to be applied in the generation of the pad surface. The sheet-shaped hexagonal mesh structure was cut and separated according to the pad outline, and then deformed according to the curved surface of the human body. The pads were printed, and their protection performance was evaluated; a 79.2–81.8% reduction in impact force was observed compared to similar cases in which the pads were not used.

scholarly journals Development and Evaluation of Fall Impact Protection Pads Using Additive Manufacturing

Materials ◽  
2019 ◽  
Vol 12 (20) ◽  
pp. 3440 ◽  
Author(s):  
Jung Hyun Park ◽  
Hee-Kyeong Jung ◽  
Jeong Ran Lee
Keyword(s):  
Additive Manufacturing ◽  
Human Body ◽  
Protective Clothing ◽  
Elderly Women ◽  
Impact Force ◽  
Thermoplastic Polyurethane ◽  
Ease Of Use ◽  
Mesh Structure ◽  
Impact Protection ◽  
The Impact

This paper presents the development and evaluation of fall-impact protection pants for elderly women using additive manufacturing. The protective pants were designed incorporating a protective pad in the hip area to reduce the impact of falls on the human body. The protective pad is a 3D mesh structure with a curved surface to fit the human body. Pads printed with flexible thermoplastic polyurethane were combined with foam to create the final pad. The impact-absorbing performance of the pad was verified through physical impact experiments. When dropping a bowling ball onto the protective pad from heights of 15, 20, and 25 cm, the protective pad was found to reduce the impact force by more than 82% in all cases. The impact force was less than the average fracture threshold of 3472 N. A subject group and an expert group evaluated the appearance, pad characteristics, motion functionality, and the wearability of the protection pants. Despite the insertion of a pad, the pants appeared natural and had a good fit. The pads were evaluated as being well-designed in terms of their position, shape, area, thickness, weight, flexibility, ease of insertion, and ease of use. Users were comfortable performing various motions when wearing the designed protective clothing. Therefore, this work can be considered to have developed protective clothing that provides satisfactory impact-protection performance and comfort thereby advancing the possibility of applying additive manufacturing to the creation of functional garments.

A response-surface-based tool for vehicle front-end design for pedestrian impact protection using human body model

2014 ◽  
Vol 66 (4) ◽  
pp. 347 ◽  
Author(s):  
Bingbing Nie ◽  
Yong Xia ◽  
Qing Zhou ◽  
Jun Huang ◽  
Bing Deng ◽  
...  
Keyword(s):  
Response Surface ◽  
Human Body ◽  
Human Body Model ◽  
Body Model ◽  
Front End ◽  
Impact Protection ◽  
Pedestrian Impact

The Automotive Vibrations Effect on the Comfort Degree Determined at the Level of Foot-Shoe Composite Structure

2015 ◽  
Vol 760 ◽  
pp. 305-310
Author(s):  
Mihaela Baritz ◽  
Ion Balcu ◽  
Laura Diana Cotoros ◽  
Anca Elena Stanciu
Keyword(s):  
Human Body ◽  
Composite Structure ◽  
Composite Structures ◽  
Experimental System ◽  
Comfort Level ◽  
Locomotor System ◽  
Limits Of Stability ◽  
Physiological Limits ◽  
Human Body Models ◽  
Car Driving

A number of issues related to the effect of vibration analysis, developed inside a car, the comfort level led to the composite structure of the whole foot and shoes is presented in this paper. Variants of composite structures consisting of biomechanical system - the human body, foot and shoe variants that undergo analysis are presented in the first part of the paper. Also human body models are presented and analyzed in connection with the surface and place inside the car driving. This study aims to determine the physiological limits of stability of the locomotor system, barefoot and wearing shoes, with or without insoles, over a period of time the car is driven. The experimental system and methodology for analysis are described in the second part of the paper. The third part of the paper presents the results and conclusions obtained from this study and determining the postural comfort degree (PCD).

scholarly journals The fluid-based structure for human body impact protection

2020 ◽  
Vol 1507 ◽  
pp. 032016
Author(s):  
Dawid Pacek ◽  
Roman Gieleta
Keyword(s):  
Human Body ◽  
Impact Protection

Microstructural comparison of synthetic bioceramics with natural bioceramics

1991 ◽  
Vol 49 ◽  
pp. 38-39
Author(s):  
Shulin Wen ◽  
Jingwei Feng ◽  
A. Krajewski ◽  
A. Ravaglioli
Keyword(s):  
Recent Work ◽  
Human Body ◽  
Human Tissues ◽  
Main Constituent ◽  
Laboratory Furnace ◽  
Chinese Adult ◽  
Human Enamel ◽  
Biological Compatibility ◽  
Synthetic Hydroxyapatite ◽  
Synthetic Work

Hydroxyapatite bioceramics has attracted many material scientists as it is the main constituent of the bone and the teeth in human body. The synthesis of the bioceramics has been performed for years. Nowadays, the synthetic work is not only focused on the hydroapatite but also on the fluorapatite and chlorapatite bioceramics since later materials have also biological compatibility with human tissues; and they may also be very promising for clinic purpose. However, in comparison of the synthetic bioceramics with natural one on microstructure, a great differences were observed according to our previous results. We have investigated these differences further in this work since they are very important to appraise the synthetic bioceramics for their clinic application.The synthetic hydroxyapatite and chlorapatite were prepared according to A. Krajewski and A. Ravaglioli and their recent work. The briquettes from different hydroxyapatite or chlorapatite powders were fired in a laboratory furnace at the temperature of 900-1300°C. The samples of human enamel selected for the comparison with synthetic bioceramics were from Chinese adult teeth.

Study on erythrocytes by SEM photogrammetry (SEMP) technique

1990 ◽  
Vol 48 (3) ◽  
pp. 724-725
Author(s):  
Tong Wensheng ◽  
Lu Lianhuang ◽  
Zhang Zhijun
Keyword(s):  
Quantitative Analysis ◽  
Cell Membrane ◽  
Clinical Diagnosis ◽  
Human Body ◽  
Blood Cells ◽  
Three Dimensional ◽  
Normal Person ◽  
Blood Disease ◽  
Computation Technique ◽  
Important Basis

This is a combined study of two diffirent branches, photogrammetry and morphology of blood cells. The three dimensional quantitative analysis of erythrocytes using SEMP technique, electron computation technique and photogrammetry theory has made it possible to push the study of mophology of blood cells from LM, TEM, SEM to a higher stage, that of SEM P. A new path has been broken for deeply study of morphology of blood cells.In medical view, the abnormality of the quality and quantity of erythrocytes is one of the important changes of blood disease. It shows the abnormal blood—making function of the human body. Therefore, the study of the change of shape on erythrocytes is the indispensable and important basis of reference in the clinical diagnosis and research of blood disease.The erythrocytes of one normal person, three PNH Patients and one AA patient were used in this experiment. This research determines the following items: Height;Length of two axes (long and short), ratio; Crevice in depth and width of cell membrane; Circumference of erythrocytes; Isoline map of erythrocytes; Section map of erythrocytes.

Partial characterization and post-feeding activity of midgut aminopeptidase in the human body louse,Pediculus humanus humanus

1998 ◽  
Vol 23 (4) ◽  
pp. 382-387 ◽  
Author(s):  
James O. Ochanda ◽  
Eva A. C. Oduor ◽  
Rachel Galun ◽  
Mabel O. Imbuga ◽  
Kosta Y. Mumcuoglu
Keyword(s):  
Human Body ◽  
Feeding Activity ◽  
Partial Characterization ◽  
Body Louse ◽  
Pediculus Humanus ◽  
Post Feeding ◽  
Human Body Louse

Understanding the Human Body: An Introduction to Anatomy and Physiology

2013 ◽  
Author(s):  
Anthony A. Goodman
Keyword(s):  
Human Body ◽  
Anatomy And Physiology
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