열가소성 폴리머 열접합 자동화 시스템 개발 (Development of Automation System for Thermoplastic Polymer Thermal Bonding)

서지정보

· 발행기관 : 한국기계가공학회
· 수록지 정보 : 한국기계가공학회지 / 24권 / 5호 / 28 ~ 35페이지
· 저자명 : 배근동, 박태현

초록

Precise control of temperature, pressure, and bonding time is essential for achieving high-quality polymer thermal bonding, particularly in microscale/nanoscale applications. Conventional thermal fusion bonding systems consist of a pressure chamber with a bonding unit, which limits the flexibility in adjusting the important bonding parameters. In this study, an automated polymer thermal bonding system was designed that decouples the pressure chamber from the bonding unit, making independent control and real-time optimization of the bonding conditions possible. The system enhances manufacturing efficiency by reducing bonding time, automating process monitoring, and minimizing manual intervention. By regulating the saturated vapor pressure, it maintains uniform bonding conditions, thereby improving consistency and reproducibility in various bonding situations. A digital control interface makes it possible to fine tune the bonding parameters, contributing to solid process stability and reduced defect rates. The experimental results suggest that the proposed system provides a more uniform bond quality than conventional methods. This improved reproducibility supports its suitability for high-precision applications, such as microfluidic device fabrication, lab-on-a-chip systems, and biomedical technologies. Furthermore, the system facilitates scalable production while maintaining high quality standards, thereby expanding the applicability of polymer-based technologies in biomedical diagnostics, environmental sensing, and flexible electronics.

영어초록

In this study, a methodology for sound quality analysis is proposed to evaluate the noise generated during the operation of drive components in automotive power seats. Using this method, quantitative criteria for the emotional evaluation of the operating noise were established. Conventional requirements are typically defined based on sound pressure levels and one-third octave bands; however, these requirements fail to adequately capture subjective impressions because they rely solely on sound pressure levels. To quantify operating noise, emotional adjectives related to noise were defined, and the correlations between the emotional evaluations of users and sound quality metrics were analyzed. The emotional requirements were quantified based on the modeling of quantified sound quality parameters, and positive evaluation criteria for emotional noise characteristics were defined in terms of loudness and roughness.

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