Experimental Techniques最新文献

On the Cover: A Method for Dynamic Kolsky Bar Compression at High Temperatures: Application to Ti-6Al-4Vs 封面：高温下动态科尔斯基棒压缩方法：在Ti-6Al-4Vs上的应用

IF 1.5 4区工程技术

Experimental Techniques Pub Date : 2025-04-30 DOI: 10.1007/s40799-025-00805-5

引用次数: 0

On the Cover: An Experiment for the Validation of Force Reconstruction Techniques on Flexible Structures 封面上：柔性结构力重构技术验证实验

IF 1.5 4区工程技术

Experimental Techniques Pub Date : 2025-02-28 DOI: 10.1007/s40799-025-00789-2

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On the Cover: Identification of Lightning Strike Damage Severity Using Pulse Thermography Through Integration of Thermal Data 封面：综合热数据，利用脉冲热成像技术识别雷击损伤严重程度

IF 1.5 4区工程技术

Experimental Techniques Pub Date : 2025-01-21 DOI: 10.1007/s40799-025-00776-7

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A Note of Gratitude from the Editor-in-Chief 总编辑的感谢信

IF 1.5 4区工程技术

Experimental Techniques Pub Date : 2024-11-25 DOI: 10.1007/s40799-024-00764-3

B. Antoun

引用次数: 0

Machinability and Surface Morphology of TiB2 Reinforced Al 7075 MMC During EDM with Cryogenic Treated Cu Electrode 低温处理Cu电极对TiB2增强Al 7075 MMC的电火花加工性能和表面形貌的影响

IF 1.5 4区工程技术

Experimental Techniques Pub Date : 2024-11-25 DOI: 10.1007/s40799-024-00767-0

R. C. Pradhan, D. Das, B. P. Sahoo, C. Samal

{"title":"Machinability and Surface Morphology of TiB2 Reinforced Al 7075 MMC During EDM with Cryogenic Treated Cu Electrode","authors":"R. C. Pradhan, D. Das, B. P. Sahoo, C. Samal","doi":"10.1007/s40799-024-00767-0","DOIUrl":"10.1007/s40799-024-00767-0","url":null,"abstract":"<div>This work accentuates investigation of machinability of TiB2/Al 7075 metal matrix composite (MMC) while electrical discharge machining (EDM) with cryogenic treated Cu electrode, following Taguchi L64 design of experiments (DOE). Influences of peak current (IP), pulse on time (TON) and gap voltage (VG) on material removal rate (MRR), tool wear rate (TWR) and average surface roughness (Ra) were studied. Morphology of the machined surfaces was also explored through scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and elemental mapping. Results revealed increment of MRR (by about 55%) and TWR (by about 75%) on increasing IP (from 4 A to 10 A at TON = 100µs at VG = 55 V), but these responses reduced (by about 70% and 9%, respectively) on increasing VG (from 55 V to 80 V at IP = 4 A and TON = 100µs). Ra was influenced significantly by the IP and TON levels. At 4 A of IP, 200µs of TON and 55 V of VG, SEM micrograph of the machined surface revealed craters, re-solidified regions, voids and cracks. On increasing the current level to 6 A keeping the other parameters constant, significant reduction of debris with larger craters were observed. On further increasing the current level to 10 A, minimal amount of debris, thicker ridges and deeper craters were witnessed from the machined surface microstructure. </div>","PeriodicalId":553,"journal":{"name":"Experimental Techniques","volume":"49 3","pages":"509 - 534"},"PeriodicalIF":1.5,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144073672","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

Vibration and Acoustic Coupling Test and Analysis of High-Rise Glulam Building Floor Structure 高层胶合层建筑楼面结构振动与声耦合试验与分析

IF 1.5 4区工程技术

Experimental Techniques Pub Date : 2024-11-25 DOI: 10.1007/s40799-024-00755-4

Dong Zhang, Zheng Wang, Benjamin Mwamba, Yifan Zhang, Qing Lin

{"title":"Vibration and Acoustic Coupling Test and Analysis of High-Rise Glulam Building Floor Structure","authors":"Dong Zhang, Zheng Wang, Benjamin Mwamba, Yifan Zhang, Qing Lin","doi":"10.1007/s40799-024-00755-4","DOIUrl":"10.1007/s40799-024-00755-4","url":null,"abstract":"<div>To better meet the objective requirements such as the living comfort of residents of high-rise glulam buildings, this paper uses air-borne sound insulation and impact sound insulation testing methods to carry out the measurement and analysis of sound insulation performance of the floor structures of glulam buildings. Environmental excitation and artificial excitation were used to carry out acoustic-vibration coupling experiments and analysis of the floor structure, and the living comfort of the glulam building was evaluated. The research conclusion shows that: due to the gaps in the floor structure, sound insulation valleys appear at 125 Hz and 200 Hz. The impact sound insulation performance of glulam building floors is better than the air-borne sound insulation performance. The steady-state walking excitation method can produce low-frequency vibrations of the floor structure. Under the steady-state running excitation mode, the frequency range of acoustic-vibration coupling is expanded. The correlation between floor vibration and noise is greatest under the rubber hammer continuous tapping mode among artificial excitations. This study can provide a useful reference for the optimization design and test of vibration performance of glulam building floors in the future.</div>","PeriodicalId":553,"journal":{"name":"Experimental Techniques","volume":"49 3","pages":"493 - 508"},"PeriodicalIF":1.5,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144073671","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 Method for Dynamic Kolsky Bar Compression at High Temperatures: Application to Ti-6Al-4V 高温下动态科尔斯基棒压缩方法：在Ti-6Al-4V上的应用

IF 1.5 4区工程技术

Experimental Techniques Pub Date : 2024-11-07 DOI: 10.1007/s40799-024-00762-5

E.R. Pittman, A. J. Clarke, L. E. Lamberson

{"title":"A Method for Dynamic Kolsky Bar Compression at High Temperatures: Application to Ti-6Al-4V","authors":"E.R. Pittman, A. J. Clarke, L. E. Lamberson","doi":"10.1007/s40799-024-00762-5","DOIUrl":"10.1007/s40799-024-00762-5","url":null,"abstract":"<div>An experimental apparatus for measuring the dynamic behavior of materials subjected to strain rates on the order of 10(^3) s(^{-1}) and temperatures up to 800°C with a unique triple actuation system is developed in this work. This system is based on the traditional Kolsky (or split-Hopkinson pressure) bar design, with the addition of an external furnace used to heat the specimen to the desired temperature. A synchronized triple pneumatic actuation system is used to control the motion and timing of the the sample, incident, and transmitted bars. The cold contact time (CCT), or the time during which the heated sample is in contact with the room temperature bars before compression, is measured experimentally and carefully controlled to minimize the development of a temperature gradient across the sample and avoid heating of the bars. Experiments are performed in conjunction with ultra high speed imaging and 2D digital image correlation (DIC), as well as high speed thermal imaging. To verify the viability of the proposed system, experiments were conducted on Ti-6Al-4V (wt.%) at temperatures from 25°C up to and 800°C at an average strain rate of approximately 1200 s(^{-1}).</div>","PeriodicalId":553,"journal":{"name":"Experimental Techniques","volume":"49 3","pages":"475 - 491"},"PeriodicalIF":1.5,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40799-024-00762-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144074141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Automated Modal Identification and Tracking of a Cable-Stayed Bridge with p_LSCF 带p_LSCF斜拉桥模态自动识别与跟踪

IF 1.5 4区工程技术

Experimental Techniques Pub Date : 2024-11-06 DOI: 10.1007/s40799-024-00761-6

G. Zhang, Y. Huang, L. Meng

{"title":"Automated Modal Identification and Tracking of a Cable-Stayed Bridge with p_LSCF","authors":"G. Zhang, Y. Huang, L. Meng","doi":"10.1007/s40799-024-00761-6","DOIUrl":"10.1007/s40799-024-00761-6","url":null,"abstract":"<div>The poly-reference least squares complex frequency-domain estimator(p_LSCF) is one of the most popular modal identification methods, which is employed to track the modal parameter of a cable-stayed bridge in this paper. In order to make p_LSCF more successfully applicable to structural modal automatic tracking, two main contributions are presented: on the one hand, p_LSCF is optimized to obtain clearer stabilization diagram, which is beneficial for physical modes extraction, and on the other hand, automatic analysis on stabilisation diagrams is perform based on density-based spatial clustering to realize continuous identification of modal parameters without the need for manual intervention. Finally, the improved p_LSCF is applied to the modal track of the Yangpu bridge located in Danzhou City, Hainan Province, China. The analysis results suggest that the improved p_LSCF offers notable benefits in mode recognition rate and accuracy compared to the original approach. This improved p_LSCF demonstrates the capability to identify closely spaced modes and delivers exceptionally precise estimations, enabling the detection of minute frequency variations. Moreover, it provides meaningful assessments of modal damping ratios.</div>","PeriodicalId":553,"journal":{"name":"Experimental Techniques","volume":"49 3","pages":"459 - 474"},"PeriodicalIF":1.5,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40799-024-00761-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144073756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On the Cover: Study on Velocity Distribution on Cross-Section Flow of T-Shunt 盖上：t型分流器截面流速度分布研究

IF 1.5 4区工程技术

Experimental Techniques Pub Date : 2024-10-30 DOI: 10.1007/s40799-024-00763-4

引用次数: 0

Preparation and Performance Research of Smart Bolts Based on ALN Piezoelectric Thin Films 基于ALN压电薄膜的智能螺栓的制备及性能研究

IF 1.5 4区工程技术

Experimental Techniques Pub Date : 2024-10-30 DOI: 10.1007/s40799-024-00754-5

H. Yu, C. Guo, G. Mo

{"title":"Preparation and Performance Research of Smart Bolts Based on ALN Piezoelectric Thin Films","authors":"H. Yu, C. Guo, G. Mo","doi":"10.1007/s40799-024-00754-5","DOIUrl":"10.1007/s40799-024-00754-5","url":null,"abstract":"<div>The preparation of smart bolts is mainly achieved by pasting or embedding piezoelectric ceramic transducer (PZT) patchs on the bolt head. However, these two methods are easily affected by temperature and noise due to the presence of the adhesive layer. In this study, a novel smart bolt based on ALN piezoelectric thin film (PTF) is developed. Firstly, a probe based thin film piezoelectric coefficient testing model was established to provide a theoretical basis for measuring the internal electric field distribution of PTF sensors and the equivalent voltage applied to ALN thin films; secondly, Scanning Electron Microscope (SEM), Atomic Force Microscope (AFM), X-ray Diffraction (XRD), and Energy Dispersive Spectrometer (EDS) were used to characterize and analyze the piezoelectric layer of the PTF sensor, and the longitudinal piezoelectric coefficient was measured, providing a basis for the feasibility of the proposed new smart bolt; finally, a comparative analysis was conducted between the four performance indicators of high-temperature resistance, sensitivity, signal to noise ratio, and repeatability with the PZT adhesive smart bolt. The verification results indicate that the new smart bolt can more accurately identify the health status of the bolt.</div>","PeriodicalId":553,"journal":{"name":"Experimental Techniques","volume":"49 3","pages":"549 - 562"},"PeriodicalIF":1.5,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144074202","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