Pub Date : 1988-10-02DOI: 10.1109/ULTSYM.1988.49419
N. Mikoshiba, K. Tsubouchi, Y. Akutsu, T. Futatsuya, T. Kitano, H. Watanabe, T. Mizutani, J. Matsui
The authors measured microdefects in GaAs doped with various impurities by a photo-thermal-radiation (PTR) microscope to investigate the nature of microdefects found in previous experiments. The samples used were Si-, S-, Te-, and Zn-doped GaAs wafers. The PTR signals were measured as a function of the wavelength of excitation light. The authors found a strong dopant dependence of the PTR spectra. The PTR signal has a clear maximum at lambda equivalent to 900 nm only in Si-doped GaAs. The authors measured the PTR topographs in various GaAs wafers and compared them with photoluminescence topographs. The experimental results showed that the DTR technique gives important and unique information on the nonradiative microdefects in GaAs, although the nature of the microdefects is still uncertain.<>
{"title":"Noncontact observation of microdefects in GaAs doped with various impurities by photo-thermal-radiation microscope","authors":"N. Mikoshiba, K. Tsubouchi, Y. Akutsu, T. Futatsuya, T. Kitano, H. Watanabe, T. Mizutani, J. Matsui","doi":"10.1109/ULTSYM.1988.49419","DOIUrl":"https://doi.org/10.1109/ULTSYM.1988.49419","url":null,"abstract":"The authors measured microdefects in GaAs doped with various impurities by a photo-thermal-radiation (PTR) microscope to investigate the nature of microdefects found in previous experiments. The samples used were Si-, S-, Te-, and Zn-doped GaAs wafers. The PTR signals were measured as a function of the wavelength of excitation light. The authors found a strong dopant dependence of the PTR spectra. The PTR signal has a clear maximum at lambda equivalent to 900 nm only in Si-doped GaAs. The authors measured the PTR topographs in various GaAs wafers and compared them with photoluminescence topographs. The experimental results showed that the DTR technique gives important and unique information on the nonradiative microdefects in GaAs, although the nature of the microdefects is still uncertain.<<ETX>>","PeriodicalId":263198,"journal":{"name":"IEEE 1988 Ultrasonics Symposium Proceedings.","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132268342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1988-10-02DOI: 10.1109/ULTSYM.1988.49334
G. Visintini, R. Ganss-Puchstein, C. Ruppel
A full two-dimensional simulation model for broadband SAW (surface acoustic wave) filter has been developed using the technique of modular modeling. The model takes into account the second-order effects caused by wave diffraction and refraction, two-dimensional static charge distribution, metal resistance, and external load impedances. The angular spectrum formalism is generalized to allow the description of all effects mentioned. The simulation of a LZ LiNbO/sub 3/ filter with an aperture of 80 lambda and a relative bandwidth of 41% shows an excellent agreement with the measurement. The agreement in the passband is better than 0.1 dB, and the stopband approximation is also shown to be excellent.<>
{"title":"High precision simulation of broadband SAW filters","authors":"G. Visintini, R. Ganss-Puchstein, C. Ruppel","doi":"10.1109/ULTSYM.1988.49334","DOIUrl":"https://doi.org/10.1109/ULTSYM.1988.49334","url":null,"abstract":"A full two-dimensional simulation model for broadband SAW (surface acoustic wave) filter has been developed using the technique of modular modeling. The model takes into account the second-order effects caused by wave diffraction and refraction, two-dimensional static charge distribution, metal resistance, and external load impedances. The angular spectrum formalism is generalized to allow the description of all effects mentioned. The simulation of a LZ LiNbO/sub 3/ filter with an aperture of 80 lambda and a relative bandwidth of 41% shows an excellent agreement with the measurement. The agreement in the passband is better than 0.1 dB, and the stopband approximation is also shown to be excellent.<<ETX>>","PeriodicalId":263198,"journal":{"name":"IEEE 1988 Ultrasonics Symposium Proceedings.","volume":"250 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133254259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1988-10-02DOI: 10.1109/ULTSYM.1988.49369
J. Iseli
An improvement in conventional superheterodyne receiver systems has been realized through a use of low-loss surface acoustic wave (SAW) filters. With SAW technology, single-conversion VHF-UHF receivers can now be easily implemented. The problem of image and spurious signal rejection when converting directly from VHF and UHF ranges to low intermediate frequencies, such as 455 kHz, is solved by the high-performance two-pole SAW coupled resonator filters with selective null placement. A two-channel guard receiver is presented that illustrates this technology. The guard receiver achieves a 10 dB S+N/N sensitivity of -110.5 dBm and an image frequency rejection of greater than 80 dB.<>
{"title":"Receiver design simplified by SAW coupled resonator filters","authors":"J. Iseli","doi":"10.1109/ULTSYM.1988.49369","DOIUrl":"https://doi.org/10.1109/ULTSYM.1988.49369","url":null,"abstract":"An improvement in conventional superheterodyne receiver systems has been realized through a use of low-loss surface acoustic wave (SAW) filters. With SAW technology, single-conversion VHF-UHF receivers can now be easily implemented. The problem of image and spurious signal rejection when converting directly from VHF and UHF ranges to low intermediate frequencies, such as 455 kHz, is solved by the high-performance two-pole SAW coupled resonator filters with selective null placement. A two-channel guard receiver is presented that illustrates this technology. The guard receiver achieves a 10 dB S+N/N sensitivity of -110.5 dBm and an image frequency rejection of greater than 80 dB.<<ETX>>","PeriodicalId":263198,"journal":{"name":"IEEE 1988 Ultrasonics Symposium Proceedings.","volume":"252 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133850058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1988-10-02DOI: 10.1109/ULTSYM.1988.49411
D. Penunuri
The author reports the progress made on the development of acousto-optic Bragg cells for use in the 2-3-GHz range. These devices can satisfy a number of one- and two-dimensional analog signal processing applications, including power spectrum, cross ambiguity and Wigner functions, beamforming and matrix transforms. The transducer structure consists of a thin lithium niobate platelet for shear acoustic wave generation. Since the frequency range requires a lithium niobate platelet which is less than 1 mu m thick, ion beam milling was used for the final platelet thinning stage. A phased array transducer was fabricated on the lithium niobate platelet. Isotropic optical diffraction in gallium phosphide was used.<>
{"title":"Ion beam milled acousto-optic Bragg cells","authors":"D. Penunuri","doi":"10.1109/ULTSYM.1988.49411","DOIUrl":"https://doi.org/10.1109/ULTSYM.1988.49411","url":null,"abstract":"The author reports the progress made on the development of acousto-optic Bragg cells for use in the 2-3-GHz range. These devices can satisfy a number of one- and two-dimensional analog signal processing applications, including power spectrum, cross ambiguity and Wigner functions, beamforming and matrix transforms. The transducer structure consists of a thin lithium niobate platelet for shear acoustic wave generation. Since the frequency range requires a lithium niobate platelet which is less than 1 mu m thick, ion beam milling was used for the final platelet thinning stage. A phased array transducer was fabricated on the lithium niobate platelet. Isotropic optical diffraction in gallium phosphide was used.<<ETX>>","PeriodicalId":263198,"journal":{"name":"IEEE 1988 Ultrasonics Symposium Proceedings.","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124306259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1988-10-02DOI: 10.1109/ULTSYM.1988.49451
W. A. Smith, A. Shaulov, R. Ting
Although modified lead-titanate ceramics exhibit a negligible d/sub 31/ piezoelectric coefficient, piezoelectric-rod/polymer-matrix composites made from them exhibit a substantial d/sub 31/. A theoretical analysis shows that the composite's enhanced d/sub 31/ coefficient arises from lateral stress on the polymer phase being transferred to a longitudinal stress along the ceramic rods by the Poisson effect in the polymer, thus producing a charge through the ceramic's d/sub 33/. For hydrophone applications, this enhanced d/sub 31/ suppresses the hydrostatic response so that the composite's hydrophone figure of merit, d/sub h/g/sub h/, is less than that of the constituent ceramic. Nevertheless, the composite's still substantial d/sub h/g/sub h/, high g/sub h/ coefficient, remarkable pressure stability, low density, formability, and availability in thick sheets provide advantages for naval applications. In ultrasonic transducer applications, the composite structure provides no enhancement in electromechanical coupling, since the modified lead-titanate's k/sub 33/ is nearly the same as its k/sub t/. These expectations are in good agreement with measurements on 1-3 modified lead-titanate/polymer composites made by the dice-and-fill technique.<>
{"title":"Enhanced lateral electromechanical coupling in lead-titanate-rod/polymer piezoelectric composites","authors":"W. A. Smith, A. Shaulov, R. Ting","doi":"10.1109/ULTSYM.1988.49451","DOIUrl":"https://doi.org/10.1109/ULTSYM.1988.49451","url":null,"abstract":"Although modified lead-titanate ceramics exhibit a negligible d/sub 31/ piezoelectric coefficient, piezoelectric-rod/polymer-matrix composites made from them exhibit a substantial d/sub 31/. A theoretical analysis shows that the composite's enhanced d/sub 31/ coefficient arises from lateral stress on the polymer phase being transferred to a longitudinal stress along the ceramic rods by the Poisson effect in the polymer, thus producing a charge through the ceramic's d/sub 33/. For hydrophone applications, this enhanced d/sub 31/ suppresses the hydrostatic response so that the composite's hydrophone figure of merit, d/sub h/g/sub h/, is less than that of the constituent ceramic. Nevertheless, the composite's still substantial d/sub h/g/sub h/, high g/sub h/ coefficient, remarkable pressure stability, low density, formability, and availability in thick sheets provide advantages for naval applications. In ultrasonic transducer applications, the composite structure provides no enhancement in electromechanical coupling, since the modified lead-titanate's k/sub 33/ is nearly the same as its k/sub t/. These expectations are in good agreement with measurements on 1-3 modified lead-titanate/polymer composites made by the dice-and-fill technique.<<ETX>>","PeriodicalId":263198,"journal":{"name":"IEEE 1988 Ultrasonics Symposium Proceedings.","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117033350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1988-10-02DOI: 10.1109/ULTSYM.1988.49530
M. Namkung, W. Yost, D. Utrata, J. Grainger, P. Kushnick
The origin of MAE (magnetoacoustic emission) is mainly due to the interaction between 90 degrees magnetic domain walls and defects, as evidenced by the phase lag of the MAE with respect of magnetic induction B(t), found under certain conditions. Recent experiments have shown an asymmetry of MAE bursts in a period corresponding to a half cycle of the hysteresis loop for embrittled HY80 steel samples, which was not explained satisfactorily. The present study was performed to investigate fully the origin of this asymmetry with an improved scheme of AC magnetic field application. The results show that critical information on the material characteristics can be obtained directly from the shape of MAE spectra and that the asymmetry is reduced by increasing the AC field intensity. It has also been found that the generation of a square wavelike form of dB/dt is desirable to enhance the rate of data collection at low AC field frequency.<>
{"title":"Effects of microstructure of ferromagnetic alloys on magnetoacoustic emission","authors":"M. Namkung, W. Yost, D. Utrata, J. Grainger, P. Kushnick","doi":"10.1109/ULTSYM.1988.49530","DOIUrl":"https://doi.org/10.1109/ULTSYM.1988.49530","url":null,"abstract":"The origin of MAE (magnetoacoustic emission) is mainly due to the interaction between 90 degrees magnetic domain walls and defects, as evidenced by the phase lag of the MAE with respect of magnetic induction B(t), found under certain conditions. Recent experiments have shown an asymmetry of MAE bursts in a period corresponding to a half cycle of the hysteresis loop for embrittled HY80 steel samples, which was not explained satisfactorily. The present study was performed to investigate fully the origin of this asymmetry with an improved scheme of AC magnetic field application. The results show that critical information on the material characteristics can be obtained directly from the shape of MAE spectra and that the asymmetry is reduced by increasing the AC field intensity. It has also been found that the generation of a square wavelike form of dB/dt is desirable to enhance the rate of data collection at low AC field frequency.<<ETX>>","PeriodicalId":263198,"journal":{"name":"IEEE 1988 Ultrasonics Symposium Proceedings.","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123477175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1988-10-02DOI: 10.1109/ULTSYM.1988.49433
J. Dion, A. Barwicz, J. Bouchard
The authors designed and tested a practical measurement technique for solutions, based on a resonator with enclosed piezoceramics which can operate at a resonant frequency mode around 500 kHz. The resonance can be tracked automatically by means of a phase-locked loop. The authors report measurements made on water-methanol mixtures, showing that concentration can be expressed as a function of temperature and resonant frequency. Concentration could be evaluated with a precision of about 0.04% which depends essentially on the temperature measurement. Various milk mixtures have also been measured, to check the evaluation of fat, solid nonfat, and protein concentrations from measurements at two different temperatures. The system was designed to be eventually portable for field measurements.<>
{"title":"Practical ultrasonic spectrometric measurement of solution concentrations by a tracking technique","authors":"J. Dion, A. Barwicz, J. Bouchard","doi":"10.1109/ULTSYM.1988.49433","DOIUrl":"https://doi.org/10.1109/ULTSYM.1988.49433","url":null,"abstract":"The authors designed and tested a practical measurement technique for solutions, based on a resonator with enclosed piezoceramics which can operate at a resonant frequency mode around 500 kHz. The resonance can be tracked automatically by means of a phase-locked loop. The authors report measurements made on water-methanol mixtures, showing that concentration can be expressed as a function of temperature and resonant frequency. Concentration could be evaluated with a precision of about 0.04% which depends essentially on the temperature measurement. Various milk mixtures have also been measured, to check the evaluation of fat, solid nonfat, and protein concentrations from measurements at two different temperatures. The system was designed to be eventually portable for field measurements.<<ETX>>","PeriodicalId":263198,"journal":{"name":"IEEE 1988 Ultrasonics Symposium Proceedings.","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123679187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1988-10-02DOI: 10.1109/ULTSYM.1988.49469
C. Cinbis, P. Parent, B. Khuri-Yakub, J. Vesecky
The authors have developed an ultrasonic method to excite and detect transient capillary waves on the surface of water. The measurement is used to determine the surface tension and viscoelastic properties of thin surfactant films on the surface of the ocean. A focused ultrasonic transducer is used to excite a high-amplitude wave whose radiation pressure lifts the surface of the water and allows a capillary wave packet to propagate from the focus of the transducer. Another ultrasonic transducer, which is part of a phase-measuring acoustic microscope, measures the variation in the location of the water surface as the capillary waves pass over the transducer. An optical confocal microscope is used to detect capillary waves, and since it is a noncontacting measurement, the capillary wave evolution can be measured at different distances from the excitation point. The authors have developed a theoretical model to predict the shape of the capillary wave packet; the results of simulations of the evolution of the capillary wave in time and space are shown. The measured capillary wave amplitude is inverted to evaluate the surface tension of the water. Also shown are the results of measurements on sea water samples, which indicate that surfactants float up to the surface of the water and reduce surface tension as a function of time.<>
{"title":"Ultrasonic characterization of the marine microlayer","authors":"C. Cinbis, P. Parent, B. Khuri-Yakub, J. Vesecky","doi":"10.1109/ULTSYM.1988.49469","DOIUrl":"https://doi.org/10.1109/ULTSYM.1988.49469","url":null,"abstract":"The authors have developed an ultrasonic method to excite and detect transient capillary waves on the surface of water. The measurement is used to determine the surface tension and viscoelastic properties of thin surfactant films on the surface of the ocean. A focused ultrasonic transducer is used to excite a high-amplitude wave whose radiation pressure lifts the surface of the water and allows a capillary wave packet to propagate from the focus of the transducer. Another ultrasonic transducer, which is part of a phase-measuring acoustic microscope, measures the variation in the location of the water surface as the capillary waves pass over the transducer. An optical confocal microscope is used to detect capillary waves, and since it is a noncontacting measurement, the capillary wave evolution can be measured at different distances from the excitation point. The authors have developed a theoretical model to predict the shape of the capillary wave packet; the results of simulations of the evolution of the capillary wave in time and space are shown. The measured capillary wave amplitude is inverted to evaluate the surface tension of the water. Also shown are the results of measurements on sea water samples, which indicate that surfactants float up to the surface of the water and reduce surface tension as a function of time.<<ETX>>","PeriodicalId":263198,"journal":{"name":"IEEE 1988 Ultrasonics Symposium Proceedings.","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122063222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1988-10-02DOI: 10.1109/ULTSYM.1988.49401
A. Nakamura
Nonlinear propagation in a thin fiber of fused silica is analyzed. In this case the waveform of finite amplitude sound is affected by both velocity dispersion and nonlinear distortion. A soliton is formed under the condition of balance between nonlinear distortion and change of waveform due to velocity dispersion. The soliton formation process is investigated by computer simulation, applied to both hyperbolic and sinusoidal waveforms. The characteristics of sinusoidal and hyperbolic soliton formation are compared.<>
{"title":"Nonlinear behavior of sound and its application to soliton formation","authors":"A. Nakamura","doi":"10.1109/ULTSYM.1988.49401","DOIUrl":"https://doi.org/10.1109/ULTSYM.1988.49401","url":null,"abstract":"Nonlinear propagation in a thin fiber of fused silica is analyzed. In this case the waveform of finite amplitude sound is affected by both velocity dispersion and nonlinear distortion. A soliton is formed under the condition of balance between nonlinear distortion and change of waveform due to velocity dispersion. The soliton formation process is investigated by computer simulation, applied to both hyperbolic and sinusoidal waveforms. The characteristics of sinusoidal and hyperbolic soliton formation are compared.<<ETX>>","PeriodicalId":263198,"journal":{"name":"IEEE 1988 Ultrasonics Symposium Proceedings.","volume":"6 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120844263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1988-10-02DOI: 10.1109/ULTSYM.1988.49432
E. Papadakis
It is shown that, for statistical process control (SPC) using ultrasonic instruments for nondestructive evaluation (NDE) directly interfaced with a computer, a variable in every part can be measured at production line speeds and used in groups, typically of five, to generate points for control charts. The process control computer can then analyze the control chart (held in its memory and updated in real-time) to indicate out-of-control conditions. An indication can be produced in the time to manufacture from 5 to 40 parts, not in hours as with manual SPC. The computerized speed cannot be used directly because the statistics of control charts yields Type I errors (calling good production bad) of 1% probability per control chart point. However, an algorithm has been developed yielding an error probability of three parts in 100000. The algorithm is based on a Monte Carlo study of the statistics of control chart run rules. The Monte Carlo simulation is presented.<>
{"title":"Online statistical process control with NDE and computers","authors":"E. Papadakis","doi":"10.1109/ULTSYM.1988.49432","DOIUrl":"https://doi.org/10.1109/ULTSYM.1988.49432","url":null,"abstract":"It is shown that, for statistical process control (SPC) using ultrasonic instruments for nondestructive evaluation (NDE) directly interfaced with a computer, a variable in every part can be measured at production line speeds and used in groups, typically of five, to generate points for control charts. The process control computer can then analyze the control chart (held in its memory and updated in real-time) to indicate out-of-control conditions. An indication can be produced in the time to manufacture from 5 to 40 parts, not in hours as with manual SPC. The computerized speed cannot be used directly because the statistics of control charts yields Type I errors (calling good production bad) of 1% probability per control chart point. However, an algorithm has been developed yielding an error probability of three parts in 100000. The algorithm is based on a Monte Carlo study of the statistics of control chart run rules. The Monte Carlo simulation is presented.<<ETX>>","PeriodicalId":263198,"journal":{"name":"IEEE 1988 Ultrasonics Symposium Proceedings.","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125083309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：