The interest in wearable devices has expanded to measurement for building IoT-based mobile healthcare systems and sensing bio-signal data through clothing. Surface electromyography, called sEMG, is one of the most popular bio-signals that can be applied health monitoring systems. In general, gel-based (Ag/AgCl) electrodes are mainly used, but there problems, such as skin irritation due long-time wearing, deterioration adhesion moisture or sweat, low applicability clothes. Hence, research on...

In this study, carbon nanotubes (CNTs) were introduced into fiber (CF) wet-laid composites as functional nano-fillers to fabricate multi-functional with improved mechanical, electrical, and thermal properties. It was considered that the process most suitable in order introduce filler brittle rigid substrates, we established conditions of could impart dispersibility bonding between fibers. We polyamide 6 (PA6) short fiber, which is same polymeric material stacking film, CNT mixture enhance...

The garment manufacturing industry is a labor-intensive industry, with one of the slowest transitions to automation. Hence, it essential build smart factory based on automated systems improve productivity and allow responsive production in market. In this study, processes for sports bra were established optimized using various machines. For system, computer-based 3D virtual design software, technical embroidery machine, an automatic cutting industrial robot arm gripper, pattern sewing...

Abstract This study fabricated and evaluated the textile-type electrodes for application to smartwear that can measure surface electromyography(sEMG). It was manufactured by lock stitch(LS) moss stitch(MS), stitch distance prepared as 1, 2, or 3 mm. The compression property measured using Kawabata evaluation system, sheet resistance skin-electrode impedance were analyzed. coefficient of friction(MIU) MS larger than LS. On other hand, geometrical roughness(SMD) showed a smaller value. When...

Abstract This study compared the effectiveness of five commercially available cooling vests using three distinct thermal manikin test protocols. In addition, constraints associated with each protocol were elucidated, facilitating identification suitable evaluation methods for different vests. The performances evaluated scenarios, incorporating adaptations from Ciuha et al. (Ergonomics 64:625–639, 2021) and ASTM F2371-16, along a modified simulating hot humid weather in South Korean summer....

Highly crystallized anatase TiO2 nanoparticles were synthesized at a temperature as low 120 °C through glycothermal reaction using amorphous titanium hydrous gel precursor and 1,4-butanediol water solvent. X-ray diffraction (XRD) transmission electron microscopy (TEM) data support that the processing method provides simple low-temperature route for producing highly without pH adjustment. It is demonstrated shape dispersability of can be controlled by conditions, such variation volume ratio...

Ag/AgCl hydrogel electrodes, which are wet generally used to acquire bio-signals non-invasively. Research concerning dry electrodes is ongoing due the following limitations of electrodes: (1) skin irritation and disease when attached for a long time; (2) poor adhesion sweat; (3) considerable cost disposable use. Accordingly, in film, embroidery, knit forms were manufactured from conductive sheets yarns, typical textile-type electrode materials, using different manufacturing methods...

To produce flame retardant poly(acrylonitrile-co-vinylidene chloride) (PANVDC) fibers with limiting oxygen index (LOI) values above 28%, retardants are added to fibers. Because antimony trioxide (ATO) used widely for PANVDC is suspected as a carcinogen, non-toxic zinc hydroxystannate (ZHS) could be the alternative reduction of ATO usage. Moreover, efficiency combination ZHS expected because it was reported that resists in gas phase, whereas reacts condensed phase. Therefore, this study...

Barium titanate (BaTiO 3 ) nanoparticles were synthesized at the low temperature of 80°C through a glycothermal reaction using Ba(OH) 2 ·8H O and amorphous titanium hydrous gel as precursors solution 1,4‐butanediol water solvent. This processing method provides simple low‐temperature route for producing BaTiO nanoparticles, which could also be extended to other systems. It is demonstrated that size particles can controlled by conditions, such various volume ratios 1,4‐butanediol/water.

The smart textile industry has become increasingly interested in products with electronic functions. In these products, sensing and data communication are conducted through conductive circuits by threads. embroidery technology that uses threads as the material for line a circuit, their resistance is an important factor when designing product. main purpose of this study was to derive equivalent circuit model calculation equation consumption according design parameters. effects parameters on...

The purpose of this study was to investigate the radiation attenuation effect due reflection and refraction that occurs when passes through composite material simulation. gamma-ray shielding ability composites with different structures, such as layered composite, fibrous particle-added composites, compared. For regardless thickness, structure could not be seen. simulated coefficient found than theoretical value, which increased content inorganic materials. Assuming cesium ions absorbed on...

Wearable 2.0 research has been conducted on the manufacture of smart fitness wear that collects bio-signals through wearing a textile-based electrode. Among them, electromyography (EMG) suit measures electrical signals generated by muscles to check their activity, such as contraction and relaxation. General gel-type electrodes have reported cause skin diseases due an uncomfortable feel irritation when attached for long time. Dry various materials are being developed solve this problem....

This study aimed to manufacture PAN-based conductive yarn using a wet-spinning process. Two types of carbon nanomaterials, multiwall nanotubes (MWCNT) and nanofiber (CNF), were used alone or in mixture. First, derive the optimal composite solution condition for wet spinning process, was prepared with nanomaterials same total mass weight (%) three mechanical stirring performed: stirring, ultra-sonication, ball milling. A milling process finally selected by analyzing viscosity. Based on above...

The crystalline TiO2 powders were prepared by highly reactive supercritical fluid with unique properties of both liquid and vapor phases. In this research, the effects stirring heating rates on crystallization behavior investigated. size decreased from 90 to 60 nm as rate increased 0 up 150 rpm but 160 a further increase 400 rpm. crystals tend develop into spherical shape at below 50 morphology particles changed platelet 600 particle 200 3 12 °C/min, powder became more spherical.

In this paper, a motion editing tool to create dancing motions of humanoid robot is proposed. order build performances or robot, specific necessary. Especially, generate more natural required for robot. We proposed and algorithm the motions. The can robot's composed several steps which are captured from every joint while plays. generates continuous interpolated between each steps. A 50 cm tall developed test tool. using was demonstrated performance.

Zirconia (ZrO2) nanoparticles were synthesized at temperature as low 200°C through a glycothermal reaction using amorphous zirconium hydrous gel precursors and 1,4-butanediol solvent, XRD TEM data support that processing method provides simple route for producing highly crystallized ZrO2 without mineralizers, which could also be extended to other systems. results showed in condition had tetragonal phase with small portion of monoclinic phase, where the tetragonality was confirmed by Raman...