Production deployment of a fast transient testing methodology for analog circuits: case study and results

2004 ◽  
Author(s):  
R. Voorakaranam ◽  
R. Newby ◽  
S. Cherubal ◽  
B. Cometta ◽  
T. Kuehl ◽  
...  
Keyword(s):  
Analog Circuits ◽  
Testing Methodology ◽  
Fast Transient

Laser Based Analysis on Analog Circuits with Feedback Loops and a Case Study

2006 ◽  
Author(s):  
Fubin Zhang ◽  
David Maxwell
Keyword(s):  
Success Rate ◽  
High Resistance ◽  
Analog Circuits ◽  
Analog Circuit ◽  
Feedback Loops ◽  
Induced Voltage ◽  
Analog Device ◽  
Analog Ic ◽  
Successful Isolation

Abstract Based on the understanding of laser based techniques’ physics theory and the topology/structure of analog circuit systems with feedback loops, the propagation of laser induced voltage/current alteration inside the analog IC is evaluated. A setup connection scheme is proposed to monitor this voltage/current alteration to achieve a better success rate in finding the fail site or defect. Finally, a case of successful isolation of a high resistance via on an analog device is presented.

Analysis and Testing of Passenger Vehicle Bulkhead Fireworthiness

2017 ◽  
Author(s):  
Brian Herbst ◽  
Steven Meyer ◽  
Lauren Bell ◽  
Jack Bish ◽  
Christopher Clarke
Keyword(s):  
Passenger Vehicle ◽  
Testing Methods ◽  
Fire Propagation ◽  
Testing Methodology ◽  
Seal Design ◽  
Retention Testing ◽  
The Subject ◽  
Occupant Injuries ◽  
Pass Through

This paper presents a case study of an injury producing post-crash fire as well as testing methods to evaluate bulkhead pass through seal fire resistance and retention. In the subject crash, engine compartment fluids were released and ignited. The burning fluids entered the occupant compartment through a bulkhead pass through, resulting in rapid fire propagation and severe occupant injuries before extrication could be completed. A burn testing methodology was developed and used to evaluate the ability of the subject seal design to prevent flames and fluids from entering the occupant compartment. A retention testing methodology was also developed and used to evaluate a variety of seal designs.

An Agile and Tool-Supported Methodology for Model-Driven System Testing of Service-Centric Systems

2013 ◽  
pp. 238-253
Author(s):  
Michael Felderer ◽  
Philipp Zech ◽  
Ruth Breu
Keyword(s):  
Test Data ◽  
System Testing ◽  
Testing Methodology ◽  
Model Driven ◽  
General Overview ◽  
Test Models ◽  
Driven System ◽  
Test Behavior ◽  
System Requirements

In this chapter, the authors present an agile and model-driven system testing methodology for service-centric systems called Telling TestStories. The methodology has a tool implementation and is based on separated system, requirements, and test models that can be validated in an integrated way. Test models contain test stories describing test behavior and test data in an integrated way. The underlying testing process is iterative, incremental, and supports a test-driven design on the model level. After a general overview of the artifacts and the testing process, the authors employ the methodology and the tool implementation on a case study from the healthcare domain.

A Numerical Thermal-Hydraulic Model to Simulate the Fast Transients in a Supercritical Water Channel Subjected to Sharp Pressure Variations

2016 ◽  
Vol 19 (5) ◽  
pp. 1529-1541 ◽  
Author(s):  
Goutam Dutta ◽  
Jin Jiang ◽  
Rohit Maitri ◽  
Chao Zhang
Keyword(s):  
Case Studies ◽  
Cross Section ◽  
Supercritical Water ◽  
Water Channel ◽  
Circular Cross Section ◽  
Hydraulic Model ◽  
Operating Conditions ◽  
Exit Pressure ◽  
Fast Transient

AbstractThe present work demonstrates the extension of a thermal-hydraulic model, THRUST, with an objective to simulate the fast transient flow dynamics in a supercritical water channel of circular cross section. THRUST is a 1-D model which solves the nonlinearly coupled mass, axial momentum and energy conservation equations in time domain based on a characteristics-dependent fully implicit finite difference scheme using an Eulerian approach. The model developed accounts for the compressibility of the supercritical flow by considering the finite value of acoustic speed in the solution algorithm and treats the boundary conditions naturally. A supercritical water channel of circular cross section, for which the experimental data is available at steady state operating conditions, is chosen for the transient simulations to start with. Two different case studies are undertaken with a purpose to assess the capability of the model to analyze the fast transient processes caused by the large reduction in system pressure. The first transient case study is where the initial exit pressure is reduced by 1MPaexponentially in a time span of 5s. In the second case study, the transient is initiated with a sudden step decrease in the exit pressure by the same amount. Results obtained for both the case studies show the desired performance from the model developed.

A case study of process-variation effect to SoC analog circuits

2011 ◽  
Author(s):  
Mohd Azman Abdul Latif ◽  
Noohul Basheer Zain Ali ◽  
Fawnizu Azmadi Hussin
Keyword(s):  
Analog Circuits ◽  
Process Variation

scholarly journals Low-cost DC BIST for analog circuits: A case study

2013 ◽  
Author(s):  
Pablo Petrashin ◽  
Carlos Dualibe ◽  
Walter Lancioni ◽  
Luis Toledo
Keyword(s):  
Analog Circuits ◽  
Low Cost
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