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Quality assessment of laboratory acitivites in professional education institutions based on lean thinking 基于精益思维的专业教育机构实验室活动质量评价
Q4 Engineering Pub Date : 2025-05-01 DOI: 10.1016/j.measen.2024.101327
Sergio de Matos, Maria Fatima Ludovico de Almeida
This study presents a conceptual model for improving the quality of professional education, particularly focusing on laboratory activities, based on lean thinking (LT). Initially, we discussed the contributions of LT to improving professional education quality, and identified the theoretical and practical aspects of lean production system (LPS) models that should be considered by professional education institutions, with a particular emphasis on engineering and technology programs. The proposed conceptual model was developed based on a thorough review of the literature and documentary research to provide practical insights for educators and administrators in enhancing the quality of laboratory activities. Based on the results of the literature and documentary research, the conceptual model focusing on laboratory activities in professional education included value stream mapping (VSM), defined here as a lean management tool used to visualize, analyze, and improve the flow of materials and information required to bring a product or service to a customer. VSM can provide a comprehensive view of the entire teaching-learning process in laboratory activities, helping the referred institutions identify areas of waste, inefficiency, and opportunities for continuous improvement.
本研究提出了一个基于精益思维(LT)提高专业教育质量的概念模型,特别是关注实验室活动。首先,我们讨论了精益生产系统对提高专业教育质量的贡献,并确定了专业教育机构应该考虑的精益生产系统(LPS)模型的理论和实践方面,特别强调工程和技术课程。提出的概念模型是在对文献和文献研究进行全面回顾的基础上发展起来的,为教育工作者和管理人员提供了提高实验室活动质量的实际见解。基于文献和文献研究的结果,专注于专业教育实验室活动的概念模型包括价值流映射(VSM),这里定义为精益管理工具,用于可视化、分析和改进将产品或服务带给客户所需的材料和信息流。VSM可以提供实验室活动中整个教学过程的全面视图,帮助被推荐的机构识别浪费,效率低下的领域和持续改进的机会。
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引用次数: 0
Measurement uncertainty budget of a 5 MN·m torque standard machine 5 MN·m扭矩标准机的测量不确定度预算
Q4 Engineering Pub Date : 2025-05-01 DOI: 10.1016/j.measen.2024.101379
Kai Geva, Holger Kahmann, Christian Schlegel, Kai Mienert, Christian Keilholz, Stefan Augustat
The measurement uncertainty budget (MUB) of the 5 MN·m torque standard machine at the Physikalisch-Technische Bundesanstalt (PTB) is presented in this paper. The measurement uncertainty (MU) influences are identified and methods are presented to measure these influences, namely the reference force transducer, the moment shunts and the lever arm length. Also, the experimental results are described and discussed in this article.
本文介绍了德国物理技术研究所(PTB) 5mn·m扭矩标准机的测量不确定度预算(MUB)。确定了测量不确定度(MU)的影响,并提出了测量这些影响的方法,即参考力传感器、力矩分流器和杠杆臂长。并对实验结果进行了描述和讨论。
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引用次数: 0
Multi-modal GMI applications with annealed nanocrystalline core 具有退火纳米晶核的多模态GMI应用
Q4 Engineering Pub Date : 2025-05-01 DOI: 10.1016/j.measen.2024.101424
Diana Hrakova , Aktham Asfour , Pavel Ripka
GMI sensors theoretically offer multi-modal sensing, capable of measuring both applied stress and external magnetic fields simultaneously.
Our research explores how the impedance changes in GMI sensors are influenced not only by external magnetic fields but also by changes in the magnetic core's microstructure.
We investigate (Co94Fe6)75Si15B10 amorphous alloy and Fe73.5Cu1Nb3Si13.5B9 nanocrystalline alloy, focusing on flash annealing duration effects (15–300 seconds) under specific stress and current conditions optimized for permeability and coercivity control.
The results show that there is no single best way to process GMI cores for high sensitivity and low noise. Instead, annealing parameters must be tailored to match the sensor's operational range. We discovered that grain size significantly impacts the sensor's sensitivity and operational field range, with larger grains responding better to applied stress. This study highlights that customising annealing time allows for tailoring GMI sensor characteristics to suit specific applications.
GMI传感器理论上提供多模态传感,能够同时测量外加应力和外部磁场。我们的研究探讨了GMI传感器的阻抗变化不仅受到外部磁场的影响,而且还受到磁芯微观结构变化的影响。我们研究了(Co94Fe6)75Si15B10非晶合金和Fe73.5Cu1Nb3Si13.5B9纳米晶合金,重点研究了在特定应力和优化磁导率和矫顽力控制的电流条件下闪蒸时间(15-300秒)的影响。结果表明,不存在单一的高灵敏度、低噪声的GMI核处理方法。相反,退火参数必须定制以匹配传感器的工作范围。我们发现,晶粒尺寸对传感器的灵敏度和工作范围有显著影响,晶粒越大,对施加应力的响应越好。这项研究强调,定制退火时间允许定制GMI传感器特性,以适应特定的应用。
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引用次数: 0
Project on a fully automated evaluation of a virtual comparison of mass using the Digital Calibration Certificate (DCC) schema 使用数字校准证书(DCC)模式对质量的虚拟比较进行全自动评估的项目
Q4 Engineering Pub Date : 2025-05-01 DOI: 10.1016/j.measen.2024.101361
Beatrice Rodiek , Gregorio Álvarez Clara , Clifford Brown , Stuart Davidson , Muhammed-Ali Demir , Sascha Eichstädt , Wafa El Jaoua , Yin Hsien Fung , Jean-Laurent Hippolyte , Tobias Hoffmann , Daniel Hutzschenreuter , Moritz Jordan , Beste Korutlu , Naoki Kuramoto , Sungwan Cho , Zhengkun Li , Andrea Malengo , Nathan Murnaghan , Luis Manuel Peña Pérez , Shanna Schönhals , Ian Smith
We present the proof of concept for the first fully automated evaluation of a virtual mass comparison. The focus of this comparison is to demonstrate a possibility of digital transformation in metrology using an automated evaluation chain of different tools as well as machine-interpretable files for data transfer and reporting. We discuss the different tools and exchange formats as well as the performance of the virtual mass comparison in detail.
我们提出了第一个完全自动化的虚拟质量比较评估的概念证明。这一比较的重点是展示使用不同工具的自动评估链以及用于数据传输和报告的机器可解释文件进行计量数字化转型的可能性。我们详细讨论了不同的工具和交换格式以及虚拟质量比较的性能。
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引用次数: 0
Towards the monitoring of dialysis treatment through absorption and endogenous fluorescence techniques 利用吸收和内源性荧光技术监测透析治疗
Q4 Engineering Pub Date : 2025-05-01 DOI: 10.1016/j.measen.2024.101331
Valentina Di Pinto , Gioia Galli , Giovanni Gibertoni , Alberto Ferrari , Marco Ferrarini , Niccolò Morisi , Silvia Giovanella , Giulia Ligabue , Gabriele Donati , Luigi Rovati
This study explores the monitoring of uraemic toxins in haemodialysis treatments, beyond urea concentration, in the perspective of reducing complications stemming from the lack of personalized haemodialysis therapies. Absorption and fluorescence techniques were employed to analyse low-middle weight molecules employing laboratory prepared solutions combining p-cresol, bovine albumin and bisphenol-A molecules. These optical techniques offer the advantage of analysing the sample without physical contact, ensuring the potential for implementation in a real-world scenario for continuous treatment monitoring. Real-time monitoring of these toxins in spent dialysate could offer insights into blood concentrations, enhancing dialysis treatment optimization and complication management.
The considered absorption spectra fell within the ultraviolet range (240, 400) nm, while fluorescence spectra were obtained at a selected excitation wavelength of 285 nm. Data analysis revealed a correlation between molecule concentrations and signal intensity in both absorption and fluorescence measurements.
本研究探讨了血液透析治疗中尿毒症毒素的监测,除了尿素浓度,从减少缺乏个性化血液透析治疗引起的并发症的角度来看。利用实验室配制的对甲酚、牛白蛋白和双酚a分子混合溶液,采用吸收和荧光技术分析了中低质量分子。这些光学技术提供了在没有物理接触的情况下分析样品的优势,确保了在现实世界中实现连续处理监测的潜力。对透析液中这些毒素的实时监测可以深入了解血液浓度,增强透析治疗的优化和并发症的管理。考虑的吸收光谱落在紫外(240,400)nm范围内,而荧光光谱在选定的激发波长285 nm处获得。数据分析揭示了在吸收和荧光测量中分子浓度和信号强度之间的相关性。
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引用次数: 0
Influence of square drive connections on the calibration of torque wrenches 方形传动连接对力矩扳手校准的影响
Q4 Engineering Pub Date : 2025-05-01 DOI: 10.1016/j.measen.2024.101380
Andreas Brüge
The influence of dimensional deviations in square drive adaptors on the calibration of torque wrenches is attributed to the effect of systematic eccentricities based on theoretical considerations. It is shown how deviations from the square cross-section, as they occur with commercially available adapters, lead to relative deviations in the calibration results of around 1·10−4. With the aid of an adjustable square drive socket of high precision, such dimensional deviations are specifically generated and investigated experimentally. The theoretical behaviour is qualitatively confirmed, and the consequences for the practical calibration of torque wrenches are discussed. A new parameter for characterising the quality of a square drive connection, the combined squareness, is proposed.
基于理论考虑,将方形驱动适配器的尺寸偏差对力矩扳手校准的影响归结为系统偏心的影响。图中显示了商用适配器与方形截面的偏差如何导致校准结果的相对偏差约为1·10−4。借助高精度的可调方形驱动插座,具体地产生了这种尺寸偏差,并进行了实验研究。定性地证实了理论行为,并讨论了扭矩扳手实际校准的结果。提出了一种表征方形传动连接质量的新参数——组合方形度。
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引用次数: 0
Design and characterization of an energy-efficient underwater system for temperature and acoustic emission monitoring 一种节能的水下温度声发射监测系统的设计与表征
Q4 Engineering Pub Date : 2025-05-01 DOI: 10.1016/j.measen.2024.101422
Giorgio Cacopardo , Pasquale Daponte , Luca De Vito , Francesco Italiano , Gianluca Lazzaro , Manfredi Longo , Francesco Picariello , Sergio Sciré Scappuzzo , Ioan Tudosa
This paper reports the results obtained from a laboratory characterization of a prototype designed for the measurement of temperature and acoustic emission in underwater applications. The implemented prototype has been designed to minimize energy consumption while assuring both high-temperature measurement accuracy and low harmonic distortions on the acquired acoustic signal. In this paper, the current consumption and the waveform recorder characterization of the prototype are discussed.
本文报道了一个用于水下应用中温度和声发射测量的原型的实验室表征结果。实现的原型的设计最小化了能耗,同时保证了高温测量精度和采集声信号的低谐波失真。本文讨论了样机的电流消耗和波形记录仪特性。
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引用次数: 0
New approach for a non-linear/multi-dimensional calibration method for dynamic forces materials testing machines 动态力材料试验机非线性/多维校准方法的新方法
Q4 Engineering Pub Date : 2025-05-01 DOI: 10.1016/j.measen.2024.101339
Frank Hauschild
The paper presents a mathematical approach for a non-linear/multi-dimensional calibration method for force measurements in two different types of universal testing machines. This approach is derived from the experiences and datasets of the EMPIR project ComTraForce [1] and is based on a mathematically flexible approach that takes into account the complexity involved.
本文提出了两种不同类型万能试验机测力的非线性/多维标定方法的数学方法。该方法源于EMPIR项目ComTraForce[1]的经验和数据集,基于数学上灵活的方法,考虑了所涉及的复杂性。
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引用次数: 0
Dynamic calibration of carrier frequency bridge amplifiers 载频桥式放大器的动态校准
Q4 Engineering Pub Date : 2025-05-01 DOI: 10.1016/j.measen.2024.101343
Leonard Klaus, M. Florian Beug
In many dynamic applications, carrier frequency (CF) bridge amplifiers are used for signal conditioning of the sensor output. Up to now, a dynamic calibration was hardly possible. With PTB's dynamic bridge standard, a static and a dynamic calibration is possible.
在许多动态应用中,载波频率(CF)桥式放大器用于传感器输出的信号调理。到目前为止,动态校准几乎是不可能的。使用PTB的动态桥标准,可以进行静态和动态校准。
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引用次数: 0
Experimental verification of coil motion misalignment insensitivity in a Kibble balance 基布尔天平线圈运动失调不灵敏度的实验验证
Q4 Engineering Pub Date : 2025-05-01 DOI: 10.1016/j.measen.2024.101350
Johannes Konrad , Norbert Rogge , Suren Vasilyan , Christian Rothleitner , Thomas Fröhlich
PTB's redesigned Planck-Balance – a compact variant of a Kibble balance – is used to investigate the effects of coil motion misalignment on the final measurement result at the 1·10−6 level. It shows that, at this level of precision, the measured mass value is not dependent on the movement direction of the coil for deviation angles smaller than 0.5° from the gravity vector g, as long as the displacement is measured parallel to g. The experiments have been carried out by tilting the weighing module of the Planck-Balance, which is separated from the displacement measurement module by design. As the moving mechanism – which realises an approximately linear and constrained coil motion – is the same for both modes of the experiment, this is expected, considering the associated mathematical calculations which have already been carried out. Due to the operational effort regarding alignment procedures necessary in most conventional Kibble balances, the reported result is an important step towards broader practical applications, simplifying the implementation of Kibble's principle.
PTB重新设计的普朗克平衡-基布尔平衡的紧凑型变体-用于研究线圈运动错位对1·10−6级最终测量结果的影响。结果表明,在此精度水平下,只要测量位移平行于g,当与重力矢量g的偏差小于0.5°时,测量的质量值与线圈的运动方向无关。实验通过倾斜普朗克天平称重模块进行,该称重模块设计与位移测量模块分离。由于运动机制-实现近似线性和约束线圈运动-对于两种模式的实验是相同的,考虑到已经进行的相关数学计算,这是预期的。由于在大多数传统基布尔天平中必要的校准程序的操作努力,报告的结果是朝着更广泛的实际应用迈出的重要一步,简化了基布尔原理的实施。
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引用次数: 0
期刊
Measurement Sensors
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