• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A method of and apparatus for the determination of the standard tensile yield point in which the extension of a test body is monitored, comprises determining in the course of continuous extension within the elastic limit, the ratio of the instantaneous extension and the associated load, storing this ratio and in the course of further continuous extension the ratios of a given residual extension as well as that of the instantaneous extension and the instantaneous load are determined, the stored ratio value is summed with the ratio of the given residual extension and the instantaneous load, and the thus obtained sum is compared with the ratio of the instantaneous load whereby the instantaneous load at which the compared values become substantially equal gives the tensile yield stress at the given residual.
    公开号:SU953996A3
    申请号:SU792784801
    申请日:1979-07-03
    公开日:1982-08-23
    发明作者:Надь Ференц；Сабо Ференц；Ф.Сюч Золтан
    申请人:Мадьяр Алюминиумипари Трест (Инопредприятие)；
    IPC主号:
    专利说明:

    The invention relates to test equipment and can be used to determine the yield strength of materials.
    A device is known for determining the yield strength, comprising force and strain sensors with corresponding transducers, a divider, the inputs of which are connected to the outputs of the transducers and an adder installed in series, a reference unit and a recording device fl].
    A disadvantage of the known device is the complexity of determining the yield strength with its help, since it does not automatically measure the force at the moment of the onset of plastic deformation and fixation of this moment, which requires complex further% processing of the results.
    The purpose of the invention is to simplify the determination of yield strength.
    This goal is achieved in that the device for determining the yield strength, containing force and strain sensors with corresponding transducers, a divider, the inputs of which are connected to the outputs of the transducers, an adder, a reference unit and a recording device, is equipped with a comparator ^ a second divider and two memory blocks, the inputs of the second the divider is connected to the outputs of the transducer of the force sensor and the reference unit, the inputs of the first storage unit are connected to the outputs of the transducer of the strain sensor and the first the divider, the outputs of the force transducer are also connected to the inputs of the first divider and the second storage unit, the inputs of the adder are connected to the outputs of the second divider and the first storage unit, the inputs of the comparator are connected to the outputs of the adder and the first divider, and the comparator is connected to the outputs of the second storage unit with recording device.
    The drawing schematically shows the proposed device.
    The device comprises a strain gauge 1 with a transducer 2, a force gauge 3 with a transducer 4, a first and second dividers 5 and 6, a reference unit 7, a first and second memory blocks 8 and 9, an adder 10, a comparator 11 and a recording device 12. The outputs of the transducer 2 the information sensor is connected to the inputs of the first divider 5 and the first storage unit 8, the outputs of the first divider 5
    953996 The generation of this signal by the memory unit 9 gives to the recording device 12 : a signal from the force transducer b of the force sensor 3 proportional to the tensile strength of the material.
    Thus, the proposed device allows you to automatically fix the value of the yield strength corresponding to a given value of residual 10 deformation.
    connected to the inputs of the first storage unit 8 and the comparator 11, the outputs of the transducer 4 of the force sensor 3 are connected to the inputs of the first de 5, literal 5, the second storage unit 9 and the second divider 6, the input of the second divider 6 is also connected to the reference unit 7. Inputs of the adder 10 are connected to the outputs of the first 20 zalomi- huge capacity of the unit 8 and the second splitter 6, and an output - to the comparator 11 which, via a second memory unit 9 is connected to the recording device 12.
    The device operates as follows 25 .
    The signal from the sensors 1 and 3 through inverters 2 and 4 reaches the first divider 5 which forms the attitude sensor 30 signals one deformation sensor 3 and di- effort. Further, the ratio of these signals falls into the first storage unit 8, which accumulates these relations. The second divider 6 generates the ratio of the signal of the sensor 3 and the signal from the block 7 of the reference, which corresponds to a given value of permanent deformation. The signals from the second divider 6 and the first storage unit 8 are received in the adder 10, where
    ,. 4U the sum of these signals is formed. The comparator 11 is fed signals with sum. Matora first divider 10 and 5 · If the compared signals from the comparator 11 are equal, then the control signal from comparator 11 reaches the secondary storage unit 4 swarm 9 · After postup-
    权利要求:
    Claims (1)
    [1]
    The device contains a deformation sensor 1 with a converter 2, a force sensor 3 with a converter, first and second dividers 5 and 6, a reference unit 7, first and second storage units 8 and 9, an adder 10, a comparator 11 and a recording device 12. Transmitter 2 outputs the information sensor is connected to the inputs of the first divider 5 and the first storage unit 8, the outputs of the first divider 5 are connected to the inputs of the first storage unit 8 and the comparator 11, the outputs of the converter k of the force sensor 3 are connected to the inputs of the first divider 5 | the second storage unit 9 and the second divider 6, the input of the second divider 6 is also connected to the unit 7 of reference. The inputs of the adder 10 are connected to the outputs of the first storage unit 8 and the second divider 6, and the output is connected to a comparator 11, which is connected to the recording device 12 through the second storage unit 9. The device operates as follows. The signal from sensors 1 and 3 through converters 2 and falls on the first divider 5, which forms the ratio of the signals of the sensor 1 strain and sensor 3 effort. The ratio of these signals then enters the first storage unit 8, which accumulates these relations. The second divider 6 forms the ratio of the signal from the sensor 3 and the signal from the reference block 7, which corresponds to a predetermined residual strain value. The signals from the second divider 6 and the first storage unit 8 are fed to the adder 10, where the sum of these signals is generated. The comparator 11 receives signals from the adder 10 and the first divider 5. If the signals compared to the comparator 11 are equal, then the control signal from the comparator 11 goes to the second storage unit 9- After receiving this signal, the storage unit 9 issues the recording device 12 is a signal from the transducer k of the sensor 3 efforts, proportional to the yield strength of the material. Thus, the proposed device allows to automatically fix the value of the yield strength corresponding to a given residual strain value. Apparatus of the invention for determining the yield strength, comprising force and strain sensors with corresponding transducers, a divider whose inputs are connected to the transducer outputs, an adder, a reference unit and a recording device, characterized in that, in order to simplify the determination of the yield strength, it is equipped with a comparator -, the second divider and two memories. blocks, the inputs of the second divider are connected to the outputs of the converter of the force sensor and the counting unit, the inputs of the first storage unit are connected to the outputs of the converter of the strain sensor and the first divider, the outputs of the converter of the force sensor are also connected to the inputs of the first divider and the second storage unit, the inputs of the adder are connected to the outputs of the second the divider and the first storage unit, the inputs of the comparator are connected to the outputs of the adder and the first divider, and the comparator is connected to the resistor via the second storage unit the device. Sources of information taken into account in the examination 1. USSR author's certificate N 52it073, cl. G 01 N 3/06, 1972 (protype).
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    同族专利:
    公开号 | 公开日
    FR2430607B1|1984-10-26|
    FR2430607A1|1980-02-01|
    GB2026168B|1983-01-06|
    GB2026168A|1980-01-30|
    HU176053B|1980-12-28|
    DE2926866A1|1980-01-24|
    JPS5540990A|1980-03-22|
    US4283955A|1981-08-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE702505C|1939-01-20|1941-02-10|Ver Leichtmetallwerke G M B H|Device for automatic determination of the yield point on test rods by electrical means|
    CH300998A|1951-11-20|1954-08-31|Alfred Dr Durer|Device for determining the yield point.|
    US3076603A|1956-03-14|1963-02-05|Tinius Olsen Testing Mach Co|Materials testing equipment|
    GB1156243A|1967-02-15|1969-06-25|Instron Ltd|Proof Stress Indicators for Stress/Strain Testing Machines|
    SE355674B|1967-05-18|1973-04-30|Centre Nat Rech Metall|
    BE746930A|1970-03-05|1970-09-07|Centre Rech Metallurgique|METHOD AND DEVICE FOR RAPID AND CONTINUOUS DETERMINATION OF THE PROPERTIES OF METAL MATERIALS.|
    LU70140A1|1973-05-24|1974-10-17|JPH06123696A|1992-10-13|1994-05-06|Seiko Instr Inc|Dynamic viscoelasticity device|
    US5463896A|1993-09-29|1995-11-07|The United States Of America As Represented By The Secretary Of The Army|Stress tester|
    JP3733990B2|1997-05-22|2006-01-11|東京製綱株式会社|Linear body analysis method and apparatus, and recording medium storing linear body analysis program|
    CN107991185A|2017-11-27|2018-05-04|中南大学|A kind of Rock burst proneness Grade Judgment based on rock material peak value elastic energy index|
    CN107991184A|2017-11-27|2018-05-04|中南大学|A kind of Rock burst proneness Grade Judgment based on residual elasticity strain energy index|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    HUAU000405|HU176053B|1978-07-04|1978-07-04|Method and measuring instrument for determining primary yield point measurable in loaded state|
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