Anamnesis in Failure Analysis—How a System-Related Approach Can Save Failure Analysis (FA) Time, Shorten Learning Loops and Reduce Cost

2013 ◽  
Author(s):  
Peter Jacob
Keyword(s):  
Failure Analysis ◽  
System Level ◽  
Illustrative Case ◽  
Medical Sciences ◽  
Device Failure ◽  
Root Cause ◽  
Related Approach ◽  
Illustrative Case Study ◽  
The Right

Abstract Anamnesis is known as an important method for pre-diagnosis in medical sciences. In device failure analysis (FA) it is not so far used, yet – especially with regard to system- and application-aspects. As a consequence, a lot of useless rootcause-related FA efforts are done on device level, while the root cause is on system level. Introduced by an illustrative case study, the benefit of a suitable anamnesis is shown as well as the way to do it – by posing the right questions before FA starts. Many FA efforts can be saved or optimized and frequently, a sound anamnesis already may lead towards the root-cause conclusion.

Applying Advanced FMEA Methods to Vehicle Fire Cause Determinations

2011 ◽  
Author(s):  
Kerry D. Parrott ◽  
Pat J. Mattes ◽  
Douglas R. Stahl
Keyword(s):  
Automotive Industry ◽  
Failure Modes ◽  
Illustrative Case ◽  
Analysis Tool ◽  
Fire Investigation ◽  
Root Cause ◽  
Product And Process ◽  
Illustrative Case Study ◽  
Fire Cause

This paper proposes that the advanced Failure Modes and Effects Analysis (FMEA) techniques and methodology currently used by the automotive industry for product and process design can be reversed and used as an effective failure/root cause analysis tool. This paper will review FMEA methodologies, explain the newest advanced FMEA methodologies that are now being used in the automotive industry, and will then explain how this methodology can be effectively reversed and used as a failure analysis and fire cause determination tool referred to as a “reverse FMEA” (rFMEA). This paper will address the application of these techniques and methodology to vehicle fire cause determination. This methodology is particularly suited to situations where multiple potential fire causes are contained within an established area of origin. NFPA 921 Guide for Fire & Explosion Investigations [1] and NFPA 1033 Standard for Professional Qualifications for Fire Investigator [2], often referenced by the fire investigation community, prescribe following a systematic approach utilizing the scientific method for fire origin and cause determinations. The rFMEA methodology is proposed as a fire investigation tool that assists in that process. This “reverse FMEA” methodology will then be applied to a hypothetical, illustrative case study to demonstrate its application.

The Sensed Presence as Right Hemispheric Intrusions into the Left Hemispheric Awareness of Self: An Illustrative Case Study

1994 ◽  
Vol 78 (3) ◽  
pp. 999-1009 ◽  
Author(s):  
Michael A. Persinger ◽  
Yves R. J. Bureau ◽  
Oksana P. Peredery ◽  
Pauline M. Richards
Keyword(s):  
Medical History ◽  
Temporal Lobe ◽  
Sense Of Self ◽  
Illustrative Case ◽  
History Of ◽  
Illustrative Case Study ◽  
The Right

The hypothesis of vectorial hemisphericity predicts that left hemispheric intrusions of the right hemispheric equivalent of the sense of self should be associated with the experience of a “presence” of someone else. The neurophenomenological profile of a woman whose medical history satisfied these theoretical criteria (verified electrical anomalies that could encourage phasic discharges within the right temporal lobe and atrophy within the left temporoparietal region) is presented. In addition to interactions between electrical seizures and thinking, she reported a long history of sensed presences, ego-alien intrusions, and “sudden knowing of the subsequent sequences of seizures” before they occurred clinically. The existence of these neurocognitive processes demands a reevaluation of the psychiatric default explanations of “hysteria” and questions the belief that “awareness during seizures” or “premonition of subsequent somatosensory experience” contraindicates an epileptic process.

Comparison Precision XTEM Specimen Preparation Techniques for Semiconductor Failure Analysis

1997 ◽  
Author(s):  
C. A. Hunt
Keyword(s):  
Failure Analysis ◽  
Cross Section ◽  
Small Volume ◽  
Semiconductor Device ◽  
Specimen Preparation ◽  
Illustrative Case ◽  
Transmission Electron ◽  
Illustrative Case Study ◽  
Preparation Techniques

Abstract Transmission electron microscopy (TEM) is now commonly employed in semiconductor device quality control and failure analysis. Precision cross-section specimens (PXTEM) are often required - these are samples that isolate an extremely small volume such as a single failed transistor. PXTEM samples are among the most difficult TEM samples to prepare. It is important for laboratories that perform PXTEM to master a variety of techniques so that the issues of cost, quality, and risk can be properly balanced. This paper addresses these issues while explaining the most common methods of PXTEM preparation along with an illustrative case study.

Case Study—Failure Analysis of a Multiplexer

2016 ◽  
Author(s):  
Michael Woo ◽  
Marcos Campos ◽  
Luigi Aranda
Keyword(s):  
Failure Analysis ◽  
High Reliability ◽  
Component Failure ◽  
Root Cause ◽  
Knowing That ◽  
Cause Of Failure ◽  
The Cost

Abstract A component failure has the potential to significantly impact the cost, manufacturing schedule, and/or the perceived reliability of a system, especially if the root cause of the failure is not known. A failure analysis is often key to mitigating the effects of a componentlevel failure to a customer or a system; minimizing schedule slips, minimizing related accrued costs to the customer, and allowing for the completion of the system with confidence that the reliability of the product had not been compromised. This case study will show how a detailed and systemic failure analysis was able to determine the exact cause of failure of a multiplexer in a high-reliability system, which allowed the manufacturer to confidently proceed with production knowing that the failure was not a systemic issue, but rather that it was a random “one time” event.

Root Cause Analysis for Pin Leakage

2016 ◽  
Author(s):  
Zhigang Song ◽  
Jochonia Nxumalo ◽  
Manuel Villalobos ◽  
Sweta Pendyala
Keyword(s):  
Failure Analysis ◽  
Root Cause Analysis ◽  
Advanced Technology ◽  
Process Step ◽  
Cause Analysis ◽  
Hard Mask ◽  
Technology Node ◽  
Root Cause ◽  
Tools And Techniques

Abstract Pin leakage continues to be on the list of top yield detractors for microelectronics devices. It is simply manifested as elevated current with one pin or several pins during pin continuity test. Although many techniques are capable to globally localize the fault of pin leakage, root cause analysis and identification for it are still very challenging with today’s advanced failure analysis tools and techniques. It is because pin leakage can be caused by any type of defect, at any layer in the device and at any process step. This paper presents a case study to demonstrate how to combine multiple techniques to accurately identify the root cause of a pin leakage issue for a device manufactured using advanced technology node. The root cause was identified as under-etch issue during P+ implantation hard mask opening for ESD protection diode, causing P+ implantation missing, which was responsible for the nearly ohmic type pin leakage.

Systemic Unsustainability as a Threat to Democracy

2020 ◽  
Author(s):  
Andrea Felicetti
Keyword(s):  
Research Agenda ◽  
Ecological Crisis ◽  
Illustrative Case ◽  
Sustainability Transition ◽  
Ways Of Thinking ◽  
Illustrative Case Study ◽  
New Research

Resilient socioeconomic unsustainability poses a threat to democracy whose importance has yet to be fully acknowledged. As the prospect of sustainability transition wanes, so does perceived legitimacy of institutions. This further limits representative institutions’ ability to take action, making democratic deepening all the more urgent. I investigate this argument through an illustrative case study, the 2017 People’s Climate March. In a context of resilient unsustainability, protesters have little expectation that institutions might address the ecological crisis and this view is likely to spread. New ways of thinking about this problem and a new research agenda are needed.

The Effects of Teaching Reflection Diaries on In-Service High School Teachers in Japan

Relay Journal ◽  
2020 ◽  
pp. 80-99
Author(s):  
Naoya Shibata
Keyword(s):  
High School ◽  
High School Teachers ◽  
Illustrative Case ◽  
Teaching Beliefs ◽  
Experienced Teacher ◽  
Female Teachers ◽  
Self Confidence ◽  
Research Findings ◽  
Illustrative Case Study

Although teaching reflection diaries (TRDs) are prevalent tools for teacher training, TRDs are rarely used in Japanese secondary educational settings. In order to delve into the effects of TRDs on teaching development, this illustrative case study was conducted with two female teachers (one novice, and one experienced) at a Japanese private senior high school. The research findings demonstrated that both in-service teachers perceived TRDs as beneficial tools for understanding their strengths and weaknesses. TRDs and class observations illustrated that the novice teacher raised their self-confidence in teaching and gradually changed their teaching activities. On the other hand, the experienced teacher held firm teaching beliefs based on their successful teaching experiences and were sometimes less willing to experiment with different approaches. However, they changed their teaching approaches when they lost balance between their class preparation and other duties. Accordingly, although teachers’ firm beliefs and successful experiences may sometimes become possible hindrances from using TRDs effectively, TRDs can be useful tools to train and help teachers realise their strengths and weaknesses.

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