• Title/Summary/Keyword: Test for verifying

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Study on The Propulsion System Flight Test of KC-100 Small Airplane (KC-100 소형항공기 추진계통 비행시험 사례연구)

  • Kim, Dae-wook;Kang, Sung-soo;Kim, Chan-jo;Wu, Bong-gil
    • Journal of Aerospace System Engineering
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    • v.7 no.2
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    • pp.15-22
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    • 2013
  • The conformity of propulsion system need to be evaluated thorough the flight test because it is an important part of the airplane to ensure the flight safety. In the small airplane development, the flight test according to KAS(Korean Airworthiness Standards) Part 23 is one of the ways to verify compliance in terms of satisfactory aircraft/engine/propeller integration. This thesis introduces means of verifying the compliance and test requirement of KAS Part 23 for the conformity of the propulsion system in small airplane. It also describes procedures and methods of propulsion system flight test through KC-100 airplane project.

Automated Test Generation from Specifications Based on Formal Description Techniques

  • Chin, Byoung-Moon;Choe, Young-Han;Kim, Sung-Un;Jung, Jae-Il
    • ETRI Journal
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    • v.19 no.4
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    • pp.363-388
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    • 1997
  • This paper describes a research result on automatic generation of abstract test cases from formal specifications by applying many related algorithms and techniques such as the testing framework, rural Chinese postman tour and unique input output sequence concepts. In addition, an efficient algorithm for verifying the strong connectivity of the reference finite state machine and the concept of unique event sequence are explained. We made use of several techniques to from an integrated framework for abstract test case generation from LOTOS and SDL specifications. A prototype of the proposed framework has been built with special attention to real protocol in order to generate the executable test cases in an automatic way. The abstract test cases in tree and tabular combined notation (TTCN) language will be applied to the TTCN compiler in order to obtain the executable test cases which re relevant to the industrial application.

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A Study of Inspection Module for Verifying Reliability on Railway Vehicle (철도차량 검측모듈의 신뢰성 검증 시험 연구)

  • Na, Kyung-min;Park, Young;Kwon, Sam-young
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.66 no.7
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    • pp.1155-1161
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    • 2017
  • This study examines environmental performance of the arcing measurement module according to international standards. The module assesses the collected current performance using a computer system. The module is required to assess environmental impact resulting from electromagnetic waves, shock and temperature change during train operation. The test includes testing EMI/EMC, vibration, shock and temperature cycling for interface between trains and the arcing measurement module. The module test items were determined in compliance with the standards suggested by the International Electrotechnical Commission (IEC) and Europaische Norm (EN). This study describes the method of test, test equipment operation and how to choose relevant performance standards. The analysis and test results of environmental performance for the module based on computer system are described in this study.

Test Vector Generator of timing simulation for 224-bit ECDSA hardware (224비트 ECDSA 하드웨어 시간 시뮬레이션을 위한 테스트벡터 생성기)

  • Kim, Tae Hun;Jung, Seok Won
    • Journal of Internet of Things and Convergence
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    • v.1 no.1
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    • pp.33-38
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    • 2015
  • Hardware are developed in various architecture. It is necessary to verifying value of variables in modules generated in each clock cycles for timing simulation. In this paper, a test vector generator in software type generates test vectors for timing simulation of 224-bit ECDSA hardware modules in developing stage. It provides test vectors with GUI format and text file format.

A Study on the Structural Analysis and Test of the Bogie Frame According to UIC Code (UIC code에 따른 대차 프레임 구조해석 및 시험에 관한 연구)

  • 최중호;송시엽;천홍정;전형용;박형순
    • Proceedings of the KSR Conference
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    • 2002.10b
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    • pp.884-891
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    • 2002
  • This report is the result performed the structural analysis and the static and fatigue load test of bogie frame for the purpose of designing and verifying the bogie frame which satisfy the load condition required in the UIC code. This investigation is proposed the efficient draft of the design to satisfy the load condition required in the UIC code. And It is performed the structural analysis to evaluate the static strength and the fatigue life of the patient material and the welded part. Also, This is proposed the efficient draft of the test to satisfy the method of the static and fatigue test required in the UC code. And it is carried out the static and the fatigue load test to verify it. We can designed the bogie frame in compliance with UIC 515-4 and 615-4 code.

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Experimental and analytical behaviour of composite slabs

  • Lopes, Emanuel;Simoes, Rui
    • Steel and Composite Structures
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    • v.8 no.5
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    • pp.361-388
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    • 2008
  • The Eurocode 4 presents some negative aspects in the design of composite slabs by the m-k Method or the Partial Connection Method. On one hand, the component chemical adherence is not accounted for in the connection between the profiled steel sheet and the concrete. On the other hand, the application of these methods requires some fitting parameters that must be determined by full scale tests. In this paper, the Eurocode 4 methods are compared with a method developed at the Federal Polytechnic School of Lausanne, based on pullout tests, which can be a valid alternative. Hence, in order to calculate the necessary parameters for the three methods, several tests have been performed such as the full scale test described in Eurocode 4 and pull-out tests. This last type of tests is of small dimensions and implicates lower costs. Finally, a full-scale test of a steel-concrete composite slab with a generic loading is presented, with the goal of verifying the analytical formulation.

고속철도 교량 신축이음장치의 내구성 실험

  • 김병석;곽종원;신호상;김영진;박성용;장익순
    • Proceedings of the KSR Conference
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    • 1998.11a
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    • pp.24-29
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    • 1998
  • To absorb the deformation of ,external live load, thermal gradient, shrinkage and creep in bridge structures and general structures, expansion joint has to be established. Especially expansion joint for high-speed railway bridge has to accomodate the static and dynamic forces and it not only has the durability of itself but also maintain the durability of structure by preventing the leakage of water. The actual used product of expansion joint for high-speed railway bridge is only ones made in France, Germany and Japan. In this study, the development process and test results of developed expansion joint are introduced which has the functional operation and durability enough to apply to high-speed railway bridges, roadway bridges and general structures. The tests consist of fatigue-durability test of 3 million times by high-speed rail load, leakage test and jack-up test for verifying the possibility of exchanging it. The performance of developed expansion joint satisfy the specification of Korea High Speed Rail Construction Authority.

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A Study on the Improvement of Air Vehicle Test Equipment(AVTE) stop by UAV Engine noise (UAV 엔진 소음에 의한 비행체점검장비(AVTE) 정지 현상 개선방안 연구)

  • Kang, Ju Hwan;Lim, Da Hoon
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.21 no.1
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    • pp.90-96
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    • 2020
  • In this era, intelligence is considered a major factor in the defense sector. As a result, securing technology for weapons systems for monitoring and reconnaissance of companies has become inevitable. As a result, UAVs (Unmanned Aerial Vehicles) have been developed and are actively operating around the world if the flight operation of manned aircraft is restricted, such as in environments that are too dangerous, messy or boring for the military to perform directly. The system of unmanned aerial vehicles, which has been researched and developed in Korea, includes Air Vehicle Test Equipment(AVTE). AVTE is equipment that is connected to an UAV to check its status and allows the operator to check its flightability by issuing an operational command to the UAV and verifying that it follows the command values. This study conducts fault finding on the phenomenon where the AVTE has stopped operating due to engine noise during these operations and analyzes the cause in terms of software, hardware and external environment. Present improvement measures according to the cause are analyzed and the results of verifying that the proposed measures can prevent failure are addressed.

Development of Full-Scale Static Test System for Aircraft Sensor Pod (항공용 센서 포드의 정적 구조시험장비 개발)

  • Jae Myung Cho;Hoon Hyuk Park;Won Woong Lee;Jong In Bae;Han Sol Lee;Eui Hwan Oh
    • Journal of Aerospace System Engineering
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    • v.17 no.1
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    • pp.97-105
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    • 2023
  • For aviation sensor pod, structural integrity should be verified through static structural tests for flight loads induced in various maneuvering conditions of the aircraft. For this, it is necessary to develop a test system for full-scale static load test of sensor pod. Based on test requirements, this paper introduced a test system configuration of the static test and the development of test structure frame, restraints equipment, loading equipment, control, and measurement equipment. In addition, methods and procedures for verifying the developed test system were explained. In conclusion, the static load test and data acquisition were successfully performed. Reliability of the test equipment was also verified in the process.

Development of Upper Garment Prototype for Girls in Late Elementary School (학령후기 여아의 바디스 원형 개발)

  • Kim, Hyun-Soon
    • Journal of the Korean Society of Costume
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    • v.59 no.9
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    • pp.16-25
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    • 2009
  • The purpose of this study is to develop pattern of a Upper Garment Prototype for late elementary school aged girls. The body of late elementary school aged girls changes steadily up to the adult and is characterized by its periodic noticeable physical distinctions. This study is selected a test pattern from 3 existing patterns through a preliminary wearing test, conducted wearing tests, and sensory evaluations three times to review and improve the pattern, and presented the pattern of late elementary school aged girls. The research pattern was developed considering aesthetic and functional aspect. The average score of sensory evaluation on appearance was 4.13 for the research pattern, which was higher than 2.74 for the test pattern. The according to the results of verifying significant differences in the test items between the two patterns through the t-test, in the items such as pleats in the line of a waist, the ease of the girth of a waist, the location of shoulder line was superior to the test pattern. The average score of the sensory evaluation on functionality was 4.91 for the research pattern, which was higher than 3.90 for the test pattern. The research pattern is superior to the test pattern in static posture, dynamic posture than the test pattern.