Test Method for Electronic Device on Condition of Small Sampling

The traditional quality testing method does not apply for the new electronic device which have characters that high-value and small-count, take advantage of the small sampling theory, we can reduce the number of test sample significantly by using the Bayes method. In the processing of the experimental data, we can improve the accuracy of the quality assessment of electronic devices by using of the Bayes method and make full use the prior information.

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An evaluation of ECT sample height for small flute board grades and Box Manufacturer’s Certification compliance

TAPPI Journal ◽

10.32964/tj8.6.24 ◽

2009 ◽

Vol 8 (6) ◽

pp. 24-28

Author(s):

CORY JAY WILSON ◽

BENJAMIN FRANK

Keyword(s):

Compressive Strength ◽

Compressive Load ◽

Test Sample ◽

Test Methods ◽

Test Method ◽

Initial Development ◽

Sample Height ◽

Relationship Of ◽

The Relationship ◽

Corrugated Fiberboard

TAPPI test T811 is the specified method to ascertain ECT relative to box manufacturer’s certification compliance of corrugated fiberboard under Rule 41/ Alternate Item 222. T811 test sample heights were derived from typical board constructions at the time of the test method’s initial development. New, smaller flute sizes have since been developed, and the use of lighter weight boards has become more common. The T811 test method includes sample specifications for typical A-flute, B-flute, and C-flute singlewall (and doublewall and triplewall) structures, but not for newer thinner E-flute or F-flute structures. This research explores the relationship of ECT sample height to measured compressive load, in an effort to determine valid E-flute and F-flute ECT sample heights for use with the T811 method. Through this process, it identifies challenges present in our use of current ECT test methods as a measure of intrinsic compressive strength for smaller flute structures. The data does not support the use of TAPPI T 811 for ECT measurement for E and F flute structures, and demonstrates inconsistencies with current height specifi-cations for some lightweight B flute.

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Comparative analysis of existing methods for improving reliability of vacuum electronic devices

Issues of radio electronics ◽

10.21778/2218-5453-2019-11-38-41 ◽

2019 ◽

pp. 38-41

Author(s):

A. A. Korneev

Keyword(s):

Comparative Analysis ◽

Electronic Device ◽

Electronic Devices ◽

Import Substitution ◽

Electronic Control ◽

Electronic Control System ◽

Vacuum Electronic Devices ◽

Electric Vacuum ◽

Rational Control ◽

Complex Technical Systems

The article presents the results of the study of the filament modes of electronic lamps and ensuring the rational temperature of the cathode. A brief description and comparative analysis of existing methods with the proposed author are given. The dependence diagrams obtained as a result of a real experiment are presented. A new method of rational control of the electric vacuum devices (EVP) filament mode is proposed, thereby increasing the reliability and increasing the durability of the EVP during operation in high-quality and expensive complex technical systems. According to the results of the study, a new specialized electronic device was developed, which allowed to smoothly regulate the supply of the filament voltage, thereby ensuring the rational control of the operation of the EVP. The technique and specialized electronic device are developed on the basis of modern scientific and technical achievements. This made it possible to increase the reliability and efficiency of the electronic control system for solving critical tasks. When implementing the developed device, the problem of import substitution was solved.

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Design and Characteristics of Microfocus X-ray Source with Sealed Tube and Transmissive Target on Diamond Window

Materials Evaluation ◽

10.32548/2021.me-04196 ◽

2021 ◽

Vol 79 (6) ◽

pp. 631-640

Author(s):

Takaaki Tsunoda ◽

Takeo Tsukamoto ◽

Yoichi Ando ◽

Yasuhiro Hamamoto ◽

Yoichi Ikarashi ◽

...

Keyword(s):

Power Density ◽

High Power ◽

High Speed ◽

Electronic Device ◽

High Reliability ◽

Electronic Devices ◽

Lithium Ion ◽

High Power Density ◽

High Magnification ◽

X Ray

Electronic devices such as medical instruments implanted in the human body and electronic control units installed in automobiles have a large impact on human life. The electronic circuits in these devices require highly reliable operation. Radiographic testing has recently been in strong demand as a nondestructive way to help ensure high reliability. Companies that use high-density micrometer-scale circuits or lithium-ion batteries require high speed and high magnification inspection of all parts. The authors have developed a new X-ray source supporting these requirements. The X-ray source has a sealed tube with a transmissive target on a diamond window that offers advantages over X-ray sources having a sealed tube with a reflective target. The X-ray source provides high-power-density X-ray with no anode degradation and a longer shelf life. In this paper, the authors will summarize X-ray source classification relevant to electronic device inspection and will detail X-ray source performance requirements and challenges. The paper will also elaborate on technologies employed in the X-ray source including tube design implementations for high-power-density X-ray, high resolution, and high magnification simultaneously; reduced system downtime for automated X-ray inspection; and reduced dosages utilizing quick X-ray on-and-off emission control for protection of sensitive electronic devices.

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Canadian Registry of Electronic Device Outcomes: remote monitoring outcomes in the Abbott battery performance alert—a multicentre cohort

EP Europace ◽

10.1093/europace/euab025 ◽

2021 ◽

Author(s):

Sharath Kumar ◽

Jason Davis ◽

Bernard Thibault ◽

Iqwal Mangat ◽

Benoit Coutu ◽

...

Keyword(s):

Remote Monitoring ◽

Primary Outcome ◽

Electronic Device ◽

Electronic Devices ◽

Cardiac Resynchronization ◽

Device Performance ◽

Cardiac Implantable Electronic Devices ◽

All Cause Mortality ◽

Multicentre Cohort

Abstract Aims Cardiac implantable electronic devices with device advisories have the potential of device malfunction. Remote monitoring (RM) of devices has been suggested to allow the identification of abnormal device performance and permit early intervention. We sought to describe the outcomes of patients with and without RM in devices subject to the Abbott Premature Battery Depletion (PBD) advisory with data from a Canadian registry. Methods and results Patients with an Abbott device subject to the PBD advisory from nine implantable cardioverter defibrillator (ICD) implanting centres in Canada were included in the registry. The use of RM was identified from baseline and follow-up data in the registry. The primary outcome was detection of PBD and all-cause mortality. A total of 2666 patients were identified with a device subject to the advisory. In all, 1687 patients (63.2%) had RM at baseline. There were 487 deaths during follow-up. At a mean follow-up of 5.7 ± 0.7 years, mortality was higher in those without a remote monitor compared with RM at baseline (24.7% vs. 14.5%; P < 0.001). Pre-mature battery depletion was identified in 36 patients (2.1%) with RM vs. 7 (0.7%) without RM (P = 0.004). Time to battery replacement was significantly reduced in patients on RM (median 5 vs. 13 days, P = 0.001). Conclusion The use of RM in patients with ICD and cardiac resynchronization therapy under advisory improved detection of PBD, time to device replacement, and was associated with a reduction in all-cause mortality. The factors influencing the association with mortality are unknown and deserve further study.

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Multiphysics Design and Analysis Simulations for Power Electronic Device Wirebonds

2003 International Electronic Packaging Technical Conference and Exhibition, Volume 2 ◽

10.1115/ipack2003-35170 ◽

2003 ◽

Author(s):

Patrick W. Wilkerson ◽

Andrzej J. Przekwas ◽

Chung-Lung Chen

Keyword(s):

Heat Dissipation ◽

Electronic Device ◽

Electronic Devices ◽

Thermal Conditions ◽

Simulation Software ◽

Operating Conditions ◽

Power Electronic ◽

Stress Concentrations ◽

Multiphysics Simulation ◽

Multiphysics Simulations

Multiscale multiphysics simulations were performed to analyze wirebonds for power electronic devices. Modern power-electronic devices can be subjected to extreme electrical and thermal conditions. Fully coupled electro-thermo-mechanical simulations were performed utilizing CFDRC’s CFD-ACE+ multiphysics simulation software and scripting capabilities. Use of such integrated multiscale multiphysics simulation and design tools in the design process can cut cost, shorten product development cycle time, and result in optimal designs. The parametrically designed multiscale multiphysics simulations performed allowed for a streamlined parametric analysis of the electrical, thermal, and mechanical effects on the wirebond geometry, bonding sites and power electronic device geometry. Multiscale analysis allowed for full device thermo-mechanical analysis as well as detailed analysis of wirebond structures. The multiscale simulations were parametrically scripted allowing for parametric simulations of the device and wirebond geometry as well as all other simulation variables. Analysis of heat dissipation from heat generated in the power-electronic device and through Joule heating were analyzed. The multiphysics analysis allowed for investigation of the location and magnitude of stress concentrations in the wirebond and device. These stress concentrations are not only investigated for the deformed wirebond itself, but additionally at the wirebond bonding sites and contacts. Changes in the wirebond geometry and bonding geometry, easily changed through the parametrically designed simulation scripts, allows for investigation of various wirebond geometries and operating conditions.

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How to Waste a Break: Using Portable Electronic Devices Substantially Counteracts Attention Enhancement Effects of Green Spaces

Environment and Behavior ◽

10.1177/0013916518788603 ◽

2018 ◽

Vol 51 (9-10) ◽

pp. 1133-1160 ◽

Cited By ~ 10

Author(s):

Bin Jiang ◽

Rose Schmillen ◽

William C. Sullivan

Keyword(s):

Significant Interaction ◽

Electronic Device ◽

Electronic Devices ◽

Green Spaces ◽

Cognitive Tasks ◽

Laptop Computer ◽

Cognitive Resource ◽

Attentional Functioning

Overuse of portable electronic devices depletes one’s attention capacity, a critical cognitive resource. Although contact with nature promotes attentional functioning, we do not know the extent to which exposure to nature and the use of electronic devices interact to promote or inhibit attentional functioning. In this study, 81 participants performed cognitive tasks and then were randomly assigned to one of four rest treatments: green settings with or without a laptop computer and barren settings with or without a laptop computer. Attention was measured three times. Analysis showed a significant effect for both setting and use of a laptop as well as a significant interaction between setting and laptop use. A further analysis controlling for time spent focused on the laptop screen produced similar results. The findings show that using an electronic device in green settings substantially counteracts the attention enhancement benefits of green spaces.

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A Multiplicative Regularizer Augmented with Spatial Priors for Microwave Imaging

10.36227/techrxiv.11918274.v2 ◽

2020 ◽

Author(s):

Nozhan Bayat ◽

Puyan Mojabi

Keyword(s):

Experimental Data ◽

Total Variation ◽

Prior Information ◽

Microwave Imaging ◽

Minimal Change ◽

Data Sets ◽

Quantitative Accuracy ◽

L2 Norm ◽

Imaging Algorithms ◽

Multiplicative Regularization

The standard weighted L2 norm total variation multiplicative regularization (MR) term originally developed for microwave imaging algorithms is modified to take into account<br>structural prior information, also known as spatial priors (SP), about the object being imaged. This modification adds one extra term to the integrand of the standard MR, thus, being referred to as an augmented MR (AMR). The main advantage of the proposed approach is that it requires a minimal change to the existing microwave imaging algorithms that are already equipped with the MR. Using two experimental data sets, it is shown that the proposed AMR (i) can handle partial SP, and (ii) can, to some extent, enhance the quantitative accuracy achievable from<br>microwave imaging.

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Thermoset Polymer Splicing Study Using a variation of welding

Procedia of Engineering and Life Science ◽

10.21070/pels.v1i1.829 ◽

2021 ◽

Vol 1 (1) ◽

Author(s):

Adi Prastyo Utomo ◽

Prantasi Harmi Tjahjanti

Keyword(s):

Hardness Test ◽

Test Sample ◽

Test Method ◽

Polymer Materials ◽

Hardness Testing ◽

Hot Gas ◽

Thermoset Polymer ◽

Materials Used ◽

Thickness Variations ◽

Plastic Welding

There is not much plastic welding currently done and not much research has been done on plastic welding. The purpose of this study was to study the use of welding variations used to join the thermoset polymer material. The thermoset polymer materials used are acrylic, melamine and bakelit with the test sample measuring 80mm in length, 30mm in width and 3mm in thickness. Variations in welding are used using hot gas welding, electric soldering and gas torches. The test method is carried out after welding to determine the porosity of the weld using a penetrant liquid. Hardness testing was also carried out. The best welding results are shown on acrylic material using electric solder, showing that the amount of porosity is the least, and has the highest hardness test.

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The importance of aerodynamics for prosthetic limb design used by competitive cyclists with an amputation: An introduction

Prosthetics and Orthotics International ◽

10.1177/0309364614527121 ◽

2014 ◽

Vol 39 (3) ◽

pp. 232-237 ◽

Cited By ~ 10

Author(s):

Bryce Dyer

Keyword(s):

Field Test ◽

Aerodynamic Drag ◽

Field Tests ◽

Field Testing ◽

Test Method ◽

Limb Amputation ◽

Small Scale ◽

Prosthetic Limb ◽

Testing Method ◽

Competitive Cyclists

Background/Objectives: This study introduces the importance of the aerodynamics to prosthetic limb design for athletes with either a lower-limb or upper-limb amputation. Study design: The study comprises two elements: 1) An initial experiment investigating the stability of outdoor velodrome-based field tests, and 2) An experiment evaluating the application of outdoor velodrome aerodynamic field tests to detect small-scale changes in aerodynamic drag respective of prosthetic limb componentry changes. Methods: An outdoor field-testing method is used to detect small and repeatable changes in the aerodynamic drag of an able-bodied cyclist. These changes were made at levels typical of alterations in prosthetic componentry. The field-based test method of assessment is used at a smaller level of resolution than previously reported. Results: With a carefully applied protocol, the field test method proved to be statistically stable. The results of the field test experiments demonstrate a noticeable change in overall athlete performance. Aerodynamic refinement of artificial limbs is worthwhile for athletes looking to maximise their competitive performance. Conclusion: A field-testing method illustrates the importance of the aerodynamic optimisation of prosthetic limb components. The field-testing protocol undertaken in this study gives an accessible and affordable means of doing so by prosthetists and sports engineers. Clinical relevance Using simple and accessible field-testing methods, this exploratory experiment demonstrates how small changes to riders’ equipment, consummate of the scale of a small change in prosthetics componentry, can affect the performance of an athlete. Prosthetists should consider such opportunities for performance enhancement when possible.

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