• 제목/요약/키워드: Environment for Test

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한반도 및 주변 권역 기후를 고려한 MIL-STD-810 테일러링에 대한 연구 (MIL-STD-810 Tailoring for Korean Peninsula and Periphery Climate)

  • 김영래;홍연웅;김동길
    • 한국신뢰성학회지:신뢰성응용연구
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    • 제18권2호
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    • pp.95-103
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    • 2018
  • Purpose: Environment test aim to validate the guarantee of required capability of materiel against various environment conditions which exposed during materiel life-cycle. In this paper, environment test design procedure and tailoring guideline for Korean peninsula and periphery climate are proposed. Methods: To design tailoring guideline, climate data which are regarding Korean peninsula and periphery regions provided from Korea Meteorological Administration (KMA) and National Climatic Data Center (NCDC) are used. Conclusion: For effective environment test, it is important that environment test have to design in considering environment conditions during materiel life-cycle. It is concluded that the high temperature test level can be softer than the test criteria in MIL-HDBK-310, however, the low temperature test level will be expected to be $2{\sim}6^{\circ}C$ harsher than MIL-HDBK-310.

산업폐수의 생물독성 발현에 관한 연구 (Evaluation on Environmental Bio-toxicity of Industrial Wastewater)

  • 김상훈;천세억;신기식;정동일
    • 한국물환경학회지
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    • 제21권3호
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    • pp.274-276
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    • 2005
  • To investigate bioassay for toxic level evaluation of wastewater, toxic levels were checked influents and effluents of 6 wastewater discharge facilities with Daphnia magna and Vibrio fischeri. In view of test duration, D. magna is preferred at 48 hours. And it was judged to efficient that one of the two was choosen for toxicity test method (Daphnia test and Vibrio test). Analysis data for wastewater is average toxic level for influent more higher than effluent. And effluent toxic level is sharp decrease than effluents.

펄스도플러 레이더 시험장치 개발 (A development of test and evaluation equipment for pulsed doppler radar)

  • 신현익;이정욱
    • 전자공학회논문지B
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    • 제33B권7호
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    • pp.154-162
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    • 1996
  • The test and evaluation is a integal part of the radar development process and it consists of two parts, field test and in-house test using a standard simulated signal. To take the in-house test, the test environment is needed to generate the critical signal that is used to determine the system design parameters and consists of general urpose measurement equipments, specialized boards and operating softwares. This paper presents the in-house test environment configuration and its function for radar system. Because this test environment genrates the simulated radar signal which has arbitrary flight path and target condition, the developed test environment makes easily to evaluate the function for radar system. The program ability of test parameters makes it possible to apply a test for 2D and 3D radar system.

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Development of an Efficient Notching Toolkit for Response Limiting Method

  • Shin, Jo Mun
    • 항공우주시스템공학회지
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    • 제15권4호
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    • pp.40-46
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    • 2021
  • At launch, satellites are exposed to various types of structural loads, such as quasi-static loads, sinusoidal vibrations, acoustic/random vibrations, and shocks. The launch environment test is aimed at verifying the structural stability of the test object against the launch environment. Various types of launch environments are simulated by simple vibration, acoustic, and shock tests considering possible test conditions in ground. However, the difference between the launch environment and the test environment is one of the causes of excessive testing. To prevent overtesting, a notching technique that adjusts the frequency range and the input load considering the design load is applied. For notching, specific procedures are established considering the satellite development concept, selected launch vehicle, higher system requirements, and test target level. In this study, the notching method, established procedure, and development of a notching toolkit for efficient testing are described.

LAUNCH ENVIRONMENT TEST OF KOMPSAT-1 SATELLITE

  • Lee, Sang-Seol;Kim, Hong-Bae;Moon, Sang-Mu;Woo, Sung-Hyun
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2000년도 춘계학술대회논문집
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    • pp.1234-1239
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    • 2000
  • KOMPSAT-1(Korea Multi-Purpose Satellite), which opened the space era in Korean peninsula, was developed from 1994 and launched successfully in December of 1999 at VAFB, USA. This paper presents a launch environment test of KOMPSAT and a short description of environment test facilities at Korea Aerospace Research Institute as well. The launch environment tests of KOMPSAT-1 satellite, such as vibration, acoustic, pyro-shock and mass properties measurement test, were performed during its system integration and test period. The participating engineers concluded that KOMPSAT-1 satellite would withstand environment during its launch period.

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자동차 환경을 고려한 커넥터의 가속시험에 관한 연구 (Highly Accelerated Life Tests for Auto-Connector in Use-Environment)

  • 김종걸;김진환
    • 대한안전경영과학회:학술대회논문집
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    • 대한안전경영과학회 2004년도 추계학술대회
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    • pp.229-235
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    • 2004
  • This paper treats accelerated life tests for automotive connector. The contact resistance of connector is explained by some factors; the use time(calender time, real cycle), stresses and loads adapted in auto test. The relationships between contact resistance and some factors are compared and analyzed by regression models in various test conditions; field use-environment, manufacturer's test environment, and accelerated test condition. The consistency between of manufacturer's test and field test is examined. Finally, the future study on accelerated test for automotive connector is presented.

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함정용 전술 컴퓨터 콘솔의 방진 (Isolation Mount Design for the Combat Computer Console Installed in Surface Ship)

  • 권병현;김준;김진천;서송호
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2000년도 춘계학술대회논문집
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    • pp.1772-1777
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    • 2000
  • The Combat Computer Consoles installed in surface ships should endure harsh environment such as vibration from engine or propeller and shock from underwater explosion. Generally, commercial isolation mounts are selected and used for anti-vibration and anti-shock design. In this research, the environment of the Combat Computer Console was analyzed first. Selected proper mount was modeled and computer simulation was performed to emulate the environment test. The real environment test was conducted with a manufactured Combat Computer Console. The test results were same as the simulation and satisfied the performance requirements. The computer simulation proved to be a useful design tool to predict the performance before the final environment test.

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NCS 기반 토양환경분야 국가기술자격 실기시험 평가방법에 관한 연구 (A Study on the Evaluation Method of National Technical Qualification for Soil Environment Based on NCS)

  • 이정규;배재근
    • 한국지하수토양환경학회지:지하수토양환경
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    • 제22권5호
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    • pp.98-104
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    • 2017
  • Human Resources Development of Korea has been practicing performance evaluation for occupational qualification licences in environmental sectors that include water, air, and wastes management, but not soil. The purpose of the study was to improve overall quality of the national qualification test in the soil sector to better train applicants based on National Competency Standards (NCS), which is designed to emphasize site-specific conditions and knowledge. This study systematically analysed the current licence test in the soil sector with respect to qualification units, performance criteria, knowledge, techniques, and attitude as described in NCS. Furthermore, test evaluation was conducted to examine the validity of the revised licence test. The test results indicated the revised test method would bring positive outcomes to the related industry. Upon the reviews and amendments by the field experts, the result of this study could serve as a framework to the development of more robust and reliable licence test.

비행환경 감지 기능을 보유한 ESAD 개발 및 기능 확인을 위한 슬레드 시험 방안 (Development of ESAD with Flight Environment Sensing Function and Sled Test Method for Function Verification)

  • 조한성
    • 한국군사과학기술학회지
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    • 제26권3호
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    • pp.273-280
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    • 2023
  • Recently electronic safety and arming device(ESAD) has attracted increasing attention due to its design flexibility. However, ESAD can be armed unintentionally due to a malfunction of an external device or interface. Thus ESAD needs an internally generated arming signal independent from the external device. In this paper, a new sensor-hybrid ESAD(SHESAD) with a flight environment sensing function for generating arming signal internally is proposed and a sled test based method is also suggested for evaluating its functions. Through the test results, the operability of the flight environment sensing function was confirmed. Also, it is shown that the proposed test method is suitable for verification of ESAD with the flight environment sensing function.

K-City 가상주행환경 고도화를 통한 자율주행시스템 검증 환경 구축 (Development of Autonomous Driving System Verification Environment through Advancement of K-City Virtual Driving Environment)

  • 이빈희;허관회;이장우;김남우;윤종민;조성우
    • 자동차안전학회지
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    • 제15권1호
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    • pp.16-26
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    • 2023
  • Recently, the importance of simulation in a virtual driving environment as well as real road-based tests for autonomous vehicle testing is increasing. Real road tests are being actively conducted at K-City, an autonomous driving test bed located at the Korea Automobile Safety Test & Research Institute of the Transportation Safety Authority. In addition, the need to advance the K-City virtual driving environment and build a virtual environment similar to the autonomous driving system test environment in real road tests is increasing. In this study, for K-City of Korea Automobile Safety Test & Research Institute, using detailed drawings and actual field data, K-City virtual driving environment was advanced, and similarity verification was verified through comparative analysis with actual K-City.