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| Nikulin S.A., Khanzhin V.G., Rojnov A.B. |
| LABORATORY- AND PRODUCTION-SCALE USE OF A METHOD OF ACOUSTIC EMISSION |
Abstract
Two ways of practical implementation of AE-method are shown. The first way it is monitoring of quality of materials with the help of AE measurements during laboratory research, which is called «Quality monitoring of materials» (used during mechanical, corrosion and other tests), the second it is AE-monitoring of processing of materials and AE-monitoring of work conditions of technological equipment, which is called «Technological monitoring». The results of a study of the mechanism and kinetics of metallic material fracture (dual phase steels, binary and multicomponental zirconium alloys, multifilamentary superconductors and composition wires) are given. The quantity fracture analysis is based on measurements of acoustic impulse peak (maximum) amplitudes by non-resonance sensors for linear measurement of acoustic shifts and crack parameters measurement. The developed methods of absolute calibration of AE equipment were checked by testing various types of materials and crack parameter measurements in laps and fractures. The calibration dependencies for quantity measurements are shown. The possibilities of AE for quality analysis and for characterizing of materials in the process of mechanical and other tests and in the process of pressure processing with the help of a developed experimental computerized AE system are demonstrated.
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| Keywords: acoustic emission|material fracture|crack parameters|measurement| |
| No 3 (2001), p. 256-263 |
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| BLACHA L., LABAJ J., ZAJACZKOWSKI A. |
| EINFLUSS DES SAUERSTOFFES IM FLÜSSIGEN KUPFER AUF DIE ANTIMONENTFERNUNG IM VAKUUMRAFFINATIONSPROZESS |
Abstract
Two ways of practical implementation of AE-method are shown. The first way it is monitoring of quality of materials with the help of AE measurements during laboratory research, which is called «Quality monitoring of materials» (used during mechanical, corrosion and other tests), the second it is AE-monitoring of processing of materials and AE-monitoring of work conditions of technological equipment, which is called «Technological monitoring». The results of a study of the mechanism and kinetics of metallic material fracture (dual phase steels, binary and multicomponental zirconium alloys, multifilamentary superconductors and composition wires) are given. The quantity fracture analysis is based on measurements of acoustic impulse peak (maximum) amplitudes by non-resonance sensors for linear measurement of acoustic shifts and crack parameters measurement. The developed methods of absolute calibration of AE equipment were checked by testing various types of materials and crack parameter measurements in laps and fractures. The calibration dependencies for quantity measurements are shown. The possibilities of AE for quality analysis and for characterizing of materials in the process of mechanical and other tests and in the process of pressure processing with the help of a developed experimental computerized AE system are demonstrated.
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| Keywords: metallurgy|vacuum metallurgy|metal evaporation| |
| No 3 (2001), p. 264-275 |
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| Kizek J., Zsigraiová Z. |
| BURNING VELOCITIES EXPERIMENTAL DETERMINATION FOR GASEOUS FUELS WITH HIGHER CONTENT OF INERT COMPOUNDS |
Abstract
Two ways of practical implementation of AE-method are shown. The first way it is monitoring of quality of materials with the help of AE measurements during laboratory research, which is called «Quality monitoring of materials» (used during mechanical, corrosion and other tests), the second it is AE-monitoring of processing of materials and AE-monitoring of work conditions of technological equipment, which is called «Technological monitoring». The results of a study of the mechanism and kinetics of metallic material fracture (dual phase steels, binary and multicomponental zirconium alloys, multifilamentary superconductors and composition wires) are given. The quantity fracture analysis is based on measurements of acoustic impulse peak (maximum) amplitudes by non-resonance sensors for linear measurement of acoustic shifts and crack parameters measurement. The developed methods of absolute calibration of AE equipment were checked by testing various types of materials and crack parameter measurements in laps and fractures. The calibration dependencies for quantity measurements are shown. The possibilities of AE for quality analysis and for characterizing of materials in the process of mechanical and other tests and in the process of pressure processing with the help of a developed experimental computerized AE system are demonstrated.
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| Keywords: combustion|flame stability|burning velocity|inert|combustion air excess| |
| No 3 (2001), p. 281-288 |
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| Pernis R. |
| INFLUENCE OF UNEQUAL TENSILE STRESS IN ECCENTRIC TUBES ON THE RISE OF LONGITUDINAL CRACKS |
Abstract
Two ways of practical implementation of AE-method are shown. The first way it is monitoring of quality of materials with the help of AE measurements during laboratory research, which is called «Quality monitoring of materials» (used during mechanical, corrosion and other tests), the second it is AE-monitoring of processing of materials and AE-monitoring of work conditions of technological equipment, which is called «Technological monitoring». The results of a study of the mechanism and kinetics of metallic material fracture (dual phase steels, binary and multicomponental zirconium alloys, multifilamentary superconductors and composition wires) are given. The quantity fracture analysis is based on measurements of acoustic impulse peak (maximum) amplitudes by non-resonance sensors for linear measurement of acoustic shifts and crack parameters measurement. The developed methods of absolute calibration of AE equipment were checked by testing various types of materials and crack parameter measurements in laps and fractures. The calibration dependencies for quantity measurements are shown. The possibilities of AE for quality analysis and for characterizing of materials in the process of mechanical and other tests and in the process of pressure processing with the help of a developed experimental computerized AE system are demonstrated.
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| Keywords: tube drawing|eccentric tubes|tensile stress|longitudinal cracks|yield planes| |
| No 3 (2001), p. 299-309 |
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| Harrer O., Kvačkaj T., Pokorný I. |
| NUMERICAL SIMULATION OF PLATE ROLLING |
Abstract
Two ways of practical implementation of AE-method are shown. The first way it is monitoring of quality of materials with the help of AE measurements during laboratory research, which is called «Quality monitoring of materials» (used during mechanical, corrosion and other tests), the second it is AE-monitoring of processing of materials and AE-monitoring of work conditions of technological equipment, which is called «Technological monitoring». The results of a study of the mechanism and kinetics of metallic material fracture (dual phase steels, binary and multicomponental zirconium alloys, multifilamentary superconductors and composition wires) are given. The quantity fracture analysis is based on measurements of acoustic impulse peak (maximum) amplitudes by non-resonance sensors for linear measurement of acoustic shifts and crack parameters measurement. The developed methods of absolute calibration of AE equipment were checked by testing various types of materials and crack parameter measurements in laps and fractures. The calibration dependencies for quantity measurements are shown. The possibilities of AE for quality analysis and for characterizing of materials in the process of mechanical and other tests and in the process of pressure processing with the help of a developed experimental computerized AE system are demonstrated.
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| Keywords: plate rolling|vibration|rolling force|rolling torque|mathematical simulation|FEM| |
| No 3 (2001), p. 320-325 |
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| Harrer O., Kvačkaj T., Pokorný I. |
| NUMERICAL SIMULATION OF BILLET ROLLING |
Abstract
Two ways of practical implementation of AE-method are shown. The first way it is monitoring of quality of materials with the help of AE measurements during laboratory research, which is called «Quality monitoring of materials» (used during mechanical, corrosion and other tests), the second it is AE-monitoring of processing of materials and AE-monitoring of work conditions of technological equipment, which is called «Technological monitoring». The results of a study of the mechanism and kinetics of metallic material fracture (dual phase steels, binary and multicomponental zirconium alloys, multifilamentary superconductors and composition wires) are given. The quantity fracture analysis is based on measurements of acoustic impulse peak (maximum) amplitudes by non-resonance sensors for linear measurement of acoustic shifts and crack parameters measurement. The developed methods of absolute calibration of AE equipment were checked by testing various types of materials and crack parameter measurements in laps and fractures. The calibration dependencies for quantity measurements are shown. The possibilities of AE for quality analysis and for characterizing of materials in the process of mechanical and other tests and in the process of pressure processing with the help of a developed experimental computerized AE system are demonstrated.
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| Keywords: billet rolling|mathematical simulation|tensile stress|FEM|DEFORM 3D| |
| No 3 (2001), p. 310-319 |
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| Borkowski S. |
| THE QUALITY OF METAL PRODUCTS AND THE ENVIRONMENT PROTECTION |
Abstract
Two ways of practical implementation of AE-method are shown. The first way it is monitoring of quality of materials with the help of AE measurements during laboratory research, which is called «Quality monitoring of materials» (used during mechanical, corrosion and other tests), the second it is AE-monitoring of processing of materials and AE-monitoring of work conditions of technological equipment, which is called «Technological monitoring». The results of a study of the mechanism and kinetics of metallic material fracture (dual phase steels, binary and multicomponental zirconium alloys, multifilamentary superconductors and composition wires) are given. The quantity fracture analysis is based on measurements of acoustic impulse peak (maximum) amplitudes by non-resonance sensors for linear measurement of acoustic shifts and crack parameters measurement. The developed methods of absolute calibration of AE equipment were checked by testing various types of materials and crack parameter measurements in laps and fractures. The calibration dependencies for quantity measurements are shown. The possibilities of AE for quality analysis and for characterizing of materials in the process of mechanical and other tests and in the process of pressure processing with the help of a developed experimental computerized AE system are demonstrated.
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| Keywords: quality|casting material products|cast-iron|Al-Si alloys|speroidization|metallothermy|environment protection| |
| No 3 (2001), p. 343-348 |
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