Abstract:
본 발명은 소형 기계식 가스 압축장치, 압축방법, 그 압축장치를 갖는 분석 시스템 및 분석방법에 대한 것이다. 보다 상세하게는 내부 일단에 압축챔버를 구비하고, 저압가스가 주입되는 가스주입부, 압축된 고압가스가 토출되는 가스 토출부를 구비하고, 외주면에 특정간격을 갖는 제1나사산이 형성된 압축실린더; 압축실린더 내부에 구비되는 플런저; 및 압축실린더의 내부 타단으로 삽입되어 플런저와 접촉되어 플런저를 이동시키는 가압부와 가압부와 연결되며 내주면에 제1나사산과 맞물리도록 형성된 제2나사산이 형성된 기계식결속부를 구비한 압축기;를 포함하여 압축기의 구동에 의해 플런저를 병진이동시켜 압축챔버에 주입된 가스를 압축하는 것을 특징으로 하는 소형 기계식 가스 압축장치에 관한 것이다.
Abstract:
본 발명은 기능성 압입자, 기능성 압입자를 이용한 압입시험장치, 압입시험방법, 기능성 압입자를 이용한 분석 시스템 및 분석방법에 대한 것이다. 보다 상세하게는 압입 시험을 위해 구성되는 기능성 압입자에 있어서, 대상 시험편에 특정하중으로 접촉되어 압입되는 압입자; 및 압입자의 일측에 구비되어 상기 압입자로 초음파를 인가하고, 인가된 상기 초음파가 상기 대상 시험편에 반사되는 반사 초음파를 수신하는 초음파 센서; 를 포함하여 압입변형, 파괴 중에 나타나는 실시간 변형, 결함 및 파괴신호를 포괄적으로 채득할 수 있기 때문에 신뢰도가 높은 측정데이터의 생산이 가능한 것을 특징으로 하는 기능성 압입자에 관한 것이다.
Abstract:
The present invention relates to an environment-combined indentation tester, and, more specifically, to the indentation tester capable of performing a quasi-static indentation process, which is aimed at in a general material test, through minutely controlling to raise pressure, wherein the indentation tester comprises: a first chamber maintaining an environment in which hydrogen gas and liquefied hydrogen are pressurized at high pressure; a second chamber being installed inside the first chamber and into which pressurizing material formed with gas or working fluid flows from outside; a specimen being installed at a space between the lower side of the first chamber and the lower side of the second chamber; and an indenter being inserted into a cylinder hole longitudinally penetrating the lower side of the second chamber, and pressurizing the specimen with hydraulic pressure or gas pressure due to the pressurizing material flowing into the second chamber.
Abstract:
The present invention relates to a device for measuring material properties under high-pressure environment using ultrasonic waves. The device comprises a housing which has a chamber for measuring the properties of a specimen under high-pressure environment; a support which is formed on the bottom of the housing and supports the specimen; one or more jigs which controls the proximity to the specimen according to the thickness of the specimen; sensor insertion ports which are formed on the bottoms of the jigs and fix ultrasonic sensors having different diameters; ultrasonic sensors which are inserted into the sensor insertion ports and transmits ultrasonic signals to a ultrasonic measurement system through a cable; a gas supply valve which is installed on one side of the housing and supplies gas to the inside of the housing; an automatic gas discharge valve which is installed on the other side of the housing and automatically discharges gas when a gas pressure value in the housing is more than a reference pressure value; a pressure gauge which is installed on the top end of the housing and displays the gas pressure value in the housing; a pressure sensor which is installed inside of the housing and indicates the opening of the automatic gas discharge valve by transmitting the signal obtained from the gas pressure value to the automatic gas discharge valve; and a ultrasonic measurement system which calculates the property measurement value of the specimen by receiving the ultrasonic signals from the ultrasonic sensors when the gas pressure value in the housing is maintained less than the reference pressure value.
Abstract:
PURPOSE: A device for measuring the concentration of hydrogen and a manufacturing method thereof are provided to easily remove hydrogen which is absorbed by a hydrogen absorbing layer and to sense leakage of the hydrogen efficiently and accurately. CONSTITUTION: A device for measuring the concentration of hydrogen comprises a first substrate(10), a second substrate(20), a control unit(40), and a resistance measuring device. A hydrogen absorbing layer is formed on one surface of the first substrate. The second substrate is spaced from the first substrate and includes a conductive layer in a surface which faces the substrate. The control unit applies voltages to both end portions of the hydrogen absorbing layer and electrifies the hydrogen absorbing layer and the conductive layer by applying voltages between the same after a predetermined period after applying voltages to the hydrogen absorbing layer. The resistance measuring unit is connected to the hydrogen absorbing layer.
Abstract:
PURPOSE: A hydrogen gas concentration measuring system is provided to obtain the system with high efficiency and light weight which facilitates to process by utilizing a multi-wall carbon nanotube sheet. CONSTITUTION: A hydrogen gas concentration measuring system comprises a hydrogen gas concentration measuring device(100), a noise removing filter(200), a signal receiving unit(310), a signal converting unit(320), and a signal calculating unit(330). The hydrogen gas concentration measuring device includes one or more signal measuring unit(110) and a signal collecting unit(120). The signal measuring unit includes a carbon nanotube sheet. The noise removing filter receives signals from the hydrogen gas concentration measuring device, thereby removing noise included in the signals by removing frequencies of a predetermined band. The signal receiving unit receives the signals filtered by the noise removing filter. The signal converting unit converts the signals received by the signal receiving unit into digital signals. The signal calculating unit calculates an average value of the signals converted by the signal converting unit. [Reference numerals] (110) Signal measuring unit; (121) Rectifying unit; (122) Amplifying unit; (310) Signal receiving unit; (320) Signal converting unit; (330) Signal calculating unit; (400) Display unit; (AA,BB) Signal collecting unit; (CC) Noise removing filter
Abstract:
본 발명의 일실시예에 따른 압입자의 마모를 고려한 압입하중 인가곡선의 보정방법은, 초기의 이상적으로 예리한 삼각뿔형 압입자를 이용한 압입시험을 행하여 얻어진 압입하중 인가곡선과 여러 차례 압입시험을 반복한 결과 첨단 마모가 발생하여 무뎌진 압입자의 압입하중 인가곡선이 압입자의 마모 부분(혹은 결과적으로 발생하는 압입하중 인가곡선의 접촉천이 구간)을 제외하고는 일치한다는 전제 하에 예리한 압입자의 압입하중 인가곡선을 이론적으로 뒷받침하는 킥의 법칙(Kick's law)를 이용하여 마모된 압입자의 마모깊이를 산출하는 산출단계 및 마모된 압입자에 대한 압입하중 인가곡선을 x축 방향으로 산출된 마모깊이 만큼 평행이동시키는 보정단계를 포함한다.