2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation最新文献

Features of Guided Waves Propagating in a Honeycomb Sandwich Structure 导波在蜂窝夹层结构中的传播特性

2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation Pub Date : 2021-07-28 DOI: 10.1115/qnde2021-75053

Lifu Wang, L. Araque, Steffen Tai, A. Mal, C. Schaal

{"title":"Features of Guided Waves Propagating in a Honeycomb Sandwich Structure","authors":"Lifu Wang, L. Araque, Steffen Tai, A. Mal, C. Schaal","doi":"10.1115/qnde2021-75053","DOIUrl":"https://doi.org/10.1115/qnde2021-75053","url":null,"abstract":"\u0000 Honeycomb sandwich structures (HSSs) are well-known for their very high specific strength, and are widely used for aeronautical and aerospace industrial applications. Due to their special usage and high cost, non-destructive evaluation (NDE) of HSS plays an important role in the industry. NDE using guided waves, as one of the potential method of NDE, is getting more attention for its economical efficiency. However, due to the complexity of the HSS, very little theoretical work has been done on determining the features of waves propagating in HSS structure especially in a wide frequency range. This research focuses on using a homogenized layer model for the HSS, studying how the material properties affect the features of the guided waves. By using the global matrix method, features including the phase velocities and group velocities of different modes are computed. The effects of different material properties are evaluated and compared. The results show that the material properties of the face sheets are most influential for gudied wave features. These findings open up the possibility of bypassing the complexity of the core to analyze the guided waves propagating in a honeycomb sandwich structure.","PeriodicalId":189764,"journal":{"name":"2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125563775","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}

引用次数: 0

Structural Health Monitoring of Electro-Mechanical Actuators in Aviation: Recent Breakthroughs and Further Challenges 航空机电致动器结构健康监测:最新突破和进一步挑战

2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation Pub Date : 2021-07-28 DOI: 10.1115/qnde2021-75230

V. Memmolo, Carmine Vaselli, N. Cimminiello, Pasquale Salvato, E. Monaco, F. Ricci

{"title":"Structural Health Monitoring of Electro-Mechanical Actuators in Aviation: Recent Breakthroughs and Further Challenges","authors":"V. Memmolo, Carmine Vaselli, N. Cimminiello, Pasquale Salvato, E. Monaco, F. Ricci","doi":"10.1115/qnde2021-75230","DOIUrl":"https://doi.org/10.1115/qnde2021-75230","url":null,"abstract":"\u0000 Electrical actuation systems have recently been introduced in aviation pursuing the concepts of More Electric Aircraft. Instead of employing hydraulic pipelines, Electro-Mechanical Actuator (EMA) transfers the power by “wires” with a consequent improvement of the aircraft actuation performance. However, the integration of linear electromechanical actuators is promising yet challenging in safety critical systems. Within this context, this work critically reviews electromechanical actuators currently available for aerospace application, the limits for their upcoming deployment and the different solutions to achieve an on-condition maintenance to reduce any safety risk during lifetime. First of all, the typical conversion mechanism adopted so far are briefly described with emphasis on the most suited for aerospace applications. A further insight is given to failure modes of these systems, which dramatically contrast the countless inherent advantages thereof. A particular attention is given to the jamming of the driven load, which is a critical mechanical transmission failure in many applications such as primary flight controls or landing gears extension and steering. Finally, the focus is moved to possible strategies to avoid any hazard induced by this failure. In particular, any structural alteration which is prone to induce jamming can be monitored towards the establishment of a predictive maintenance. Different possibilities are available in the way to timely assess the bearing of inner EMA surfaces where screwing is enabled.","PeriodicalId":189764,"journal":{"name":"2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128544338","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}

引用次数: 0

Acoustic Magnifying Lens Based on Compact Non-Dispersive Spiral Metamaterial Array 基于紧凑型非色散螺旋超材料阵列的声放大透镜

2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation Pub Date : 2021-07-28 DOI: 10.1115/qnde2021-75073

Li Xiang, Li Jian, Huang Xinjing

{"title":"Acoustic Magnifying Lens Based on Compact Non-Dispersive Spiral Metamaterial Array","authors":"Li Xiang, Li Jian, Huang Xinjing","doi":"10.1115/qnde2021-75073","DOIUrl":"https://doi.org/10.1115/qnde2021-75073","url":null,"abstract":"\u0000 Acoustic magnifying lenses are utilized in a diversity of applications, from nondestructive detection of damages in materials to biomedical imaging. Acoustic metamaterials (MMs) provide powerful control over sound waves by using periodic structures made from natural materials. Existing acoustic meta-lens are commonly associated with designing dispersive metamaterial or connect with local resonator, thus resulting in inevitable deformity of waveforms. Although the four-blade spiral MMs has non-dispersive properties, how to further improve the transmission and reduce the manufacturing difficulty in a compact size is important to construction of a meta-lens.\u0000 We propose a single-blade spiral metamaterial, which has higher transmission and non-dispersion properties. Based on this meta-unit, we designed and manufactured a meta-lens with the ability to amplify sound signals at the focus point. Different from previous research, the meta-lens is established by periodic meta-helicoid unit and presents great focusing ability while maintaining a compact volume. We show, both theoretically and experimentally, the thin flat acoustic magnifier can turn normally incident signals focusing on the prescribed point and augmenting pressure amplitude about three times. Moreover, the diameter of each element is only 10 mm, and the thickness of the meta-lens is 48mm. Our new strategy may offer an alternate route to the design of novel meta-lens and devices for acoustic application in the future.","PeriodicalId":189764,"journal":{"name":"2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124028666","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}

引用次数: 0

Explainable Machine Learning for Damage Detection: in Carbon Fiber Composite Plates Under Varying Temperature Conditions 可解释的机器学习损伤检测:在变温度条件下的碳纤维复合材料板

2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation Pub Date : 2021-07-28 DOI: 10.1115/qnde2021-75215

Christopher Schnur, J. Moll, Y. Lugovtsova, A. Schütze, T. Schneider

引用次数: 1

Feasibility of Lead Fast Reactor Heat Exchanger Tube Online Monitoring 铅快堆热交换器管在线监测的可行性

2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation Pub Date : 2021-07-28 DOI: 10.1115/qnde2021-76573

S. Glass, M. Good, E. Hirt

{"title":"Feasibility of Lead Fast Reactor Heat Exchanger Tube Online Monitoring","authors":"S. Glass, M. Good, E. Hirt","doi":"10.1115/qnde2021-76573","DOIUrl":"https://doi.org/10.1115/qnde2021-76573","url":null,"abstract":"\u0000 Online structural health corrosion monitoring in advanced lead fast reactor heat exchangers and molten salt reactor heat exchangers is desirable for detecting tube degradation prior to leaks that may allow mixing of heat exchanger fluids or release of radiological contamination beyond the design containment boundary. This program demonstrates feasibility for a torsional mode sensor to attach to the outside of a long (30-m) heat-exchanger tube in the stagnant flow area where the tube joins the heat-exchanger plenum and where it is possible to protect a sensor and cable from high-force flows. The sensor must be connected by a cable to a monitoring instrument near the heat exchanger. The sensor and cable management approach will be impractical to implement on existing heat exchangers; rather, sensors must be installed in conjunction with heat exchanger fabrication. Previous work has shown the ability of low-temperature lead zirconate titanate (PZT) piezoceramic sensors to detect anomalies of interest in 3-m tubes. These sensors have subsequently been extended to a 30-m tube more representative of commercial power heat exchanger designs. The program will continue to investigate higher-temperature piezoelectric ceramics and long-term performance of high-temperature adhesives and sealants for 350 C lead reactor environments and higher-temperature (700 °C) molten salt environments.","PeriodicalId":189764,"journal":{"name":"2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114740661","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}

引用次数: 0

QNDE2021 Front Matter 前体物质

2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation Pub Date : 2021-07-28 DOI: 10.1115/qnde2021-fm1

引用次数: 0

Improvement Effect of Active Magnetization on Subsea Pipeline Localization 主动磁化对海底管道定位的改善作用

2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation Pub Date : 2021-07-28 DOI: 10.1115/qnde2021-74982

Huang Xinjing, Wang Yuan, Jin Zhaosheng, W. Jialin, Li Jian, Feng Hao, Zhang Yu

引用次数: 0

Determination of the Case Depth by Ultrasonic Backscatter of Case and Induction Hardened Steel With a Soft Hardness Gradient 用超声后向散射法测定具有软硬度梯度的淬火钢和淬火钢的深度

2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation Pub Date : 2021-07-28 DOI: 10.1115/qnde2021-74995

Paul Graja, N. Meyendorf

{"title":"Determination of the Case Depth by Ultrasonic Backscatter of Case and Induction Hardened Steel With a Soft Hardness Gradient","authors":"Paul Graja, N. Meyendorf","doi":"10.1115/qnde2021-74995","DOIUrl":"https://doi.org/10.1115/qnde2021-74995","url":null,"abstract":"\u0000 Heat treatment of steel is a common industrial procedure to alter the microstructure of a component locally. Often, only the surface of a component is heat-treated to a certain thickness such that it benefits from the high durability provided by a hardened microstructure, while the core microstructure remains ductile. The nondestructive determination of this thickness, the case-hardened depth, can be performed by evaluating the slight differences of the ultrasonic backscatter from the grains of changing size in different layers. However, current methods require a small transition zone from the hardened to the core microstructure for accurate results. In this work, a different approach for the determination of the case-hardened depth of components with a large transition zone is described. This approach utilizes ultrasonic frequencies about 20 MHz in contact technique. The ultrasound is introduced in an oblique setup with a wedge and is mode converted to the transverse mode. The statistical evaluation of the backscattering shows promising results for the determination of the case-hardened depth of hardened components with a smooth decrease of the hardness over the depth.","PeriodicalId":189764,"journal":{"name":"2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117262200","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}

引用次数: 1

Porosity Inspection in Metal Directed Energy Deposition Using Femtosecond Laser Based Transient Thermoreflectance Measurement 基于飞秒激光瞬态热反射测量的金属定向能沉积孔隙度检测

2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation Pub Date : 2021-07-28 DOI: 10.1115/qnde2021-68491

Peipei Liu, Kiyoon Yi, H. Sohn

{"title":"Porosity Inspection in Metal Directed Energy Deposition Using Femtosecond Laser Based Transient Thermoreflectance Measurement","authors":"Peipei Liu, Kiyoon Yi, H. Sohn","doi":"10.1115/qnde2021-68491","DOIUrl":"https://doi.org/10.1115/qnde2021-68491","url":null,"abstract":"\u0000 In metal directed energy deposition (DED), defects such as porosity, lack-of-fusion and cracking often occur during its material melting-solidification process. In this research, a femtosecond laser based transient thermoreflectance (TTR) technique was developed for porosity inspection in metal DED. The major contributions of the proposed technique include the following: (1) A femtosecond laser based TTR measurement system is developed for fully noncontact measurement of thermoreflectance from a newly deposited layer in DED. (2) Porosity is inspected by comparing the thermoreflectance measured at different thermal diffusion length. (3) Due to the noncontact nature and scanning capability, the proposed porosity inspection technique can be readily applied to online porosity monitoring during the DED process. It is inferred that, together with instantaneous correction actions, enhanced quality of the manufactured objects can be achieved. In this paper, offline validation tests were performed on Ti-6Al-4V samples manufactured with different DED printing parameters.","PeriodicalId":189764,"journal":{"name":"2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125818154","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}

引用次数: 0

Evaluation of Adhesive Interface Properties in Honeycomb Sandwich Structure Using Guided Waves 用导波评价蜂窝夹层结构黏附界面性能

2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation Pub Date : 2021-07-28 DOI: 10.1115/qnde2021-74433

Parambeer Singh Negi, D. Koodalil, K. Balasubramaniam

{"title":"Evaluation of Adhesive Interface Properties in Honeycomb Sandwich Structure Using Guided Waves","authors":"Parambeer Singh Negi, D. Koodalil, K. Balasubramaniam","doi":"10.1115/qnde2021-74433","DOIUrl":"https://doi.org/10.1115/qnde2021-74433","url":null,"abstract":"\u0000 A method is presented to evaluate the interfacial weakness of aluminium-based honeycomb sandwich structure (HSS) using Shear Horizontal (SH) guided wave. SH guided waves are sensitive to the interfacial properties since the wave particles vibration is oriented parallel to the adhesive-adherent joints. Periodic permanent magnet (PPM) electromagnetic acoustic transducers (EMATs) are used to excite and detect SH-guided waves. A semi-analytical finite element method is developed to simulate the SH wave propagation in HSS. The boundary stiffness approach is used to model the adhesive-adherent interface. The excitation parameters are chosen such that only SH0 mode is generated in the structure. The interaction of the fundamental SH0 wave mode with various defects and the different interface stiffness is analyzed. The frequency-wavenumber analysis is used to study the effect of interface stiffness on SH wave propagation. The analysis reveals that in a perfect bond, SH0 and S0 guided modes are present. The interaction of SH0 mode with the honeycomb core results in the genesis of S0 mode. Thus, the presence or absence of the S0 mode can be used as an indicator of bond quality.\u0000 The findings from the FE simulation are validated against the experiment. The analysis shows a reliable non-destructive evaluation of the interface joint and classifying them as good or bad bonds.","PeriodicalId":189764,"journal":{"name":"2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125874398","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}

引用次数: 0