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Metrological Perspective of Ultrasonic Pulse Velocity Measurement Technique 超声波脉冲速度测量技术的计量学视角
IF 1.009 4区 工程技术
MAPAN Pub Date : 2024-07-08 DOI: 10.1007/s12647-024-00763-0
Piyush, Sanjay Yadav, P. K. Dubey
{"title":"Metrological Perspective of Ultrasonic Pulse Velocity Measurement Technique","authors":"Piyush, Sanjay Yadav, P. K. Dubey","doi":"10.1007/s12647-024-00763-0","DOIUrl":"https://doi.org/10.1007/s12647-024-00763-0","url":null,"abstract":"<p>The nondestructive testing of concrete structures by the measurement of Ultrasonic Pulse Velocity (UPV) is well known and widely used. Concrete is highly porous and attenuating material. Therefore, low-frequency ultrasonic propagation below 200 kHz is preferred for UPV measurement. UPV is estimated by accurately, measuring the transit time and sample travel path. Consequently, the accuracy of UPV estimation is affected by transit time measurement. Transit time is measured using either the counter method or the analog data acquisition method, both of which have different sources of errors. The counter method involves two sources of errors: crystal accuracy and threshold voltage comparison. Similarly, the data acquisition method also encompasses two sources of error: sampling rate and errors due to amplitude resolution of the analog-to-digital converter. This article is related to the analysis of errors and their degree of impact on the UPV measurement.</p>","PeriodicalId":689,"journal":{"name":"MAPAN","volume":null,"pages":null},"PeriodicalIF":1.009,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141574670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Size Optimization of Grid-Tied Hybrid Energy System by Employing Forecasted Meteorological Data 利用气象预报数据优化并网混合能源系统的规模
IF 1 4区 工程技术
MAPAN Pub Date : 2024-07-06 DOI: 10.1007/s12647-024-00758-x
Priyanka Anand, Bandana Sharma, Mohammad Rizwan
{"title":"Size Optimization of Grid-Tied Hybrid Energy System by Employing Forecasted Meteorological Data","authors":"Priyanka Anand,&nbsp;Bandana Sharma,&nbsp;Mohammad Rizwan","doi":"10.1007/s12647-024-00758-x","DOIUrl":"10.1007/s12647-024-00758-x","url":null,"abstract":"<div><p>Embracing hybrid energy systems (HES) to ensure access to clean, reliable, and cost-effective energy is necessary for nations that are striving for sustainable development. By leveraging precise meteorological data from forecasts, the HES can be rendered more accurate. Thus, firstly, the research presented here employed four machine learning approaches, such as Gaussian process regression (GPR), support vector regression, extreme gradient boosting, and decision trees, to carry out hourly forecasting of meteorological data over a year. The results obtained revealed that the GPR outperformed the other three forecasting models. For this reason, the forecasted meteorological data acquired from GPR is employed in the sizing of the HES. Tunicate swarm algorithm (TSA), a recently developed method, is applied to perform the size optimization of HES capable of meeting the energy necessities at remote sites in the Indian province of Uttar Pradesh. Following a comparative study of TSA, particle swarm optimization, and harmony search, TSA proved to yield a better outcome. Additionally, the simulation result showed a 0.33% cut in the per-unit cost of energy when forecasted data becomes the basis for the optimization of system size.</p></div>","PeriodicalId":689,"journal":{"name":"MAPAN","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141574671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Correction: Pressure Measurement and Traceability at NIS- Egypt 更正：埃及国家统计研究所的压力测量和可追溯性
IF 1 4区 工程技术
MAPAN Pub Date : 2024-07-03 DOI: 10.1007/s12647-024-00761-2
A. A. Eltawil
{"title":"Correction: Pressure Measurement and Traceability at NIS- Egypt","authors":"A. A. Eltawil","doi":"10.1007/s12647-024-00761-2","DOIUrl":"10.1007/s12647-024-00761-2","url":null,"abstract":"","PeriodicalId":689,"journal":{"name":"MAPAN","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141682150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
In-house Intercomparison of MJTCs for Assigning AC/DC Transfer Difference to National Standard of LF Voltage and Current at CSIR-NPL India 在印度 CSIR-NPL 对 MJTC 进行内部相互比较，以便根据低频电压和电流国家标准分配交直流转换差值
IF 1 4区 工程技术
MAPAN Pub Date : 2024-07-02 DOI: 10.1007/s12647-024-00735-4
Sunidhi Luthra, Swati Kumari, Archana Sahu, Avni Khatkar, Bijendra Pal, Saood Ahmad
{"title":"In-house Intercomparison of MJTCs for Assigning AC/DC Transfer Difference to National Standard of LF Voltage and Current at CSIR-NPL India","authors":"Sunidhi Luthra,&nbsp;Swati Kumari,&nbsp;Archana Sahu,&nbsp;Avni Khatkar,&nbsp;Bijendra Pal,&nbsp;Saood Ahmad","doi":"10.1007/s12647-024-00735-4","DOIUrl":"10.1007/s12647-024-00735-4","url":null,"abstract":"<div><p>Multijunction thermal converters (MJTCs) are used worldwide by the leading NMIs (National Metrological Institute) as primary Standard for the establishment of low frequency (LF) AC voltage and current parameters. The MJTC is an electrothermic device that works on the principle of Joule’s heating law. At NPLI (National Physical Laboratory, India), we have kept a bank of four MJTCs with identical characteristics. The AC–DC transfer difference of these MJTCs is determined over a frequency range of 10 Hz–1 MHz. The operating range of MJTC is 2 V and 5 mA. The uncertainty in assigning AC/DC transfer difference varies from ± 5 ppm to ± 25 ppm for both voltage and current range. This paper presents the in-house intercomparison of MJTCs to evaluate relative AC/DC transfer difference for establishment of primary standard of LF voltage and current.</p></div>","PeriodicalId":689,"journal":{"name":"MAPAN","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141516322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electromagnetic Acoustic Transducer and Method for Residual Stress Detection in Conducting Materials 用于检测导电材料残余应力的电磁声传感器和方法
IF 1.009 4区 工程技术
MAPAN Pub Date : 2024-07-01 DOI: 10.1007/s12647-024-00762-1
Bishan Kumar, Nitin Dhiman, Piyush, Sanjay Yadav, P. K. Dubey
{"title":"Electromagnetic Acoustic Transducer and Method for Residual Stress Detection in Conducting Materials","authors":"Bishan Kumar, Nitin Dhiman, Piyush, Sanjay Yadav, P. K. Dubey","doi":"10.1007/s12647-024-00762-1","DOIUrl":"https://doi.org/10.1007/s12647-024-00762-1","url":null,"abstract":"<p>Residual stress present in rail, pipes or metallic structures used in industrial application is crucial to measure. Continuous use of these parts with residual stress may result in deterioration with time. If stress level crosses a certain threshold, then the structure may get damaged and sometimes result in fatal accident. Existing methods of residual stress measurement such as hole drilling and strain gauge are destructive in nature. Whereas, X-ray and neutron diffraction methods have their own inherent drawbacks. Acoustic birefringence has been proved as a powerful technique for the residual stress measurement. The technique, uses ultrasonic propagation velocity of two orthogonal polarized shear waves. Presently, two separate electromagnetic acoustic transducer (EMAT) coils are alternately used for the generation and measurement of ultrasonic propagation velocities in orthogonal polarizations or same EMAT is used for the measurement at 0° and then by rotating 90°. In the present work, the design of single coil based EMAT is proposed which is capable of generating simultaneously two orthogonally polarized ultrasonic shear waves in the object. The received signal generated by EMAT is the resultant superimposition of two waves traveling at different velocities due to residual stress present. The change in velocity and thereby present residual stress is estimated by simply measuring the echo duration. The developed EMAT provides various advantages over conventional two EMAT approach such as fast and direct estimation of change in velocity and thus residual stress in single acquisition.</p>","PeriodicalId":689,"journal":{"name":"MAPAN","volume":null,"pages":null},"PeriodicalIF":1.009,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141506644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Probe in to Site Occupancy of Uranium in Barium Aluminium Borate (BaAl2B2O7) Matrix by EXAFS and its Photoluminescence Studies 通过 EXAFS 及其光致发光研究探究硼酸铝钡（BaAl2B2O7）基质中铀的位点占有率
IF 1.009 4区 工程技术
MAPAN Pub Date : 2024-06-21 DOI: 10.1007/s12647-024-00750-5
Annapurna Rout, S. K. Jha, C. Nayak, D. Bhattacharyya, S. N. Jha
{"title":"A Probe in to Site Occupancy of Uranium in Barium Aluminium Borate (BaAl2B2O7) Matrix by EXAFS and its Photoluminescence Studies","authors":"Annapurna Rout, S. K. Jha, C. Nayak, D. Bhattacharyya, S. N. Jha","doi":"10.1007/s12647-024-00750-5","DOIUrl":"https://doi.org/10.1007/s12647-024-00750-5","url":null,"abstract":"<p>A host matrix with a potential of incorporating heavy element like uranium, that have several forms of stabilization is the key interest. Uranium-doped BaAl<sub>2</sub>B<sub>2</sub>O<sub>7</sub> is synthesized through solution combustion synthesis method. The luminescence studies indicate suitability of this alumino borate matrix to stabilize uranium as uranate (UO<sub>6</sub> <sup>6−</sup>). The uranium life-time values suggest uranium to be surrounded by two different environments with varied defect concentration. The site occupancy of uranium in BaAl<sub>2</sub>B<sub>2</sub>O<sub>7</sub> is probed through EXAFS studies. It is observed that the preferred sites for uranium incorporation is the Al<sup>3+</sup> regular lattice sites.</p>","PeriodicalId":689,"journal":{"name":"MAPAN","volume":null,"pages":null},"PeriodicalIF":1.009,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141506645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ambient Radiological Condition around an Operating Uranium Mill Tailings Disposal Facility at Turamdih, India 印度图拉姆迪赫正在运行的铀矿厂尾矿处置设施周围的环境辐射状况
IF 1.009 4区 工程技术
MAPAN Pub Date : 2024-06-18 DOI: 10.1007/s12647-024-00754-1
Rajesh Kumar, V. N. Jha, S. K. Jha, S. K. Sahoo, G. P. Verma, M. S. Kulkarni
{"title":"Ambient Radiological Condition around an Operating Uranium Mill Tailings Disposal Facility at Turamdih, India","authors":"Rajesh Kumar, V. N. Jha, S. K. Jha, S. K. Sahoo, G. P. Verma, M. S. Kulkarni","doi":"10.1007/s12647-024-00754-1","DOIUrl":"https://doi.org/10.1007/s12647-024-00754-1","url":null,"abstract":"<p>Large quantity of the feed forms part of the solid waste (tailings) slurry in the low grade uranium ore processing plant at Turamdih in Singhbhum region of Jharkhand, India. Coarser size fraction of this waste is used for backfilling of the underground uranium mines and fine fraction is discharged into an engineered impoundment system or tailings pond. Since inception of the discharges, field expeditions have been performed as part of the comprehensive radiological monitoring program for the facility. The monitoring program broadly consists of ambient gamma dose rate, atmospheric <sup>222</sup>Rn and long lived alpha activity measurement around the facility and the estimation of radionuclide in diverse environmental matrices collected from the adjoining sites. Findings reflect that the radiological conditions are comparable to the pre-existing background level adjoining the tailings pond impoundment. Further, measurements for more than a decade confirm that the atmospheric radon concentration profile just a few meters beyond the embankment is indistinguishable from the background.</p>","PeriodicalId":689,"journal":{"name":"MAPAN","volume":null,"pages":null},"PeriodicalIF":1.009,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141506646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Short-Term Stratified Temporal Noise Monitoring Strategies for Estimation of Day Equivalent Levels in Metropolitan City Delhi, India 估算印度德里大都市昼间等效水平的短期分层时间噪声监测策略
IF 1 4区 工程技术
MAPAN Pub Date : 2024-06-14 DOI: 10.1007/s12647-024-00759-w
Saurabh Kumar, Naveen Garg, Chitra Gautam
{"title":"Short-Term Stratified Temporal Noise Monitoring Strategies for Estimation of Day Equivalent Levels in Metropolitan City Delhi, India","authors":"Saurabh Kumar, Naveen Garg, Chitra Gautam","doi":"10.1007/s12647-024-00759-w","DOIUrl":"https://doi.org/10.1007/s12647-024-00759-w","url":null,"abstract":"","PeriodicalId":689,"journal":{"name":"MAPAN","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141343215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An Analysis of Multi-Source Temperature Datasets using Statistical Techniques 利用统计技术分析多源温度数据集
IF 1 4区 工程技术
MAPAN Pub Date : 2024-06-07 DOI: 10.1007/s12647-024-00756-z
Vishal Sharma, Sanjay Kumar Ghosh
{"title":"An Analysis of Multi-Source Temperature Datasets using Statistical Techniques","authors":"Vishal Sharma, Sanjay Kumar Ghosh","doi":"10.1007/s12647-024-00756-z","DOIUrl":"https://doi.org/10.1007/s12647-024-00756-z","url":null,"abstract":"","PeriodicalId":689,"journal":{"name":"MAPAN","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141373938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Method Validation of Gas Chromatography and Stability Study for Analysis of Standard Gas Mixtures of Carbon Dioxide in Nitrogen Matrix 分析氮基质中二氧化碳标准混合气体的气相色谱法验证和稳定性研究
IF 1 4区 工程技术
MAPAN Pub Date : 2024-06-06 DOI: 10.1007/s12647-024-00757-y
Harry Budiman, Dhan Rasyidan, Arum Ma’rifatun Khikmah
{"title":"Method Validation of Gas Chromatography and Stability Study for Analysis of Standard Gas Mixtures of Carbon Dioxide in Nitrogen Matrix","authors":"Harry Budiman, Dhan Rasyidan, Arum Ma’rifatun Khikmah","doi":"10.1007/s12647-024-00757-y","DOIUrl":"https://doi.org/10.1007/s12647-024-00757-y","url":null,"abstract":"","PeriodicalId":689,"journal":{"name":"MAPAN","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141377707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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