Ltx 2003 q1_kpi
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The document contains KPI data for various sites including E-MTBF (Electrical Mean Time Between Failure), MTBBF (Mean Time Between Board Failure), and uptime for Fusion and Synchro equipment. Charts are presented showing the data for each metric across sites. The PSK site combines data for Synchro AC and CPG equipment. Overall equipment reliability as measured by MTBF, MTBBF, and uptime is reported.
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+++
Thanks for all the interest shown in this presentation... visit Capacify and leave me a message if you have any questions or comments. Also let me know if you'd like to have me as a guest speaker: the in-class 'ease of assembly game' is always fun.
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The document discusses MTBF (mean time between failures), including how to calculate, predict, and test it. It addresses common misconceptions about MTBF and describes a two-day training plan that covers the basics of MTBF as well as how to analyze MTBF reports and predictions. The training provides answers to questions and considers reliability modeling techniques to estimate component and system-level MTBF.
MTBF / MTTR - Energized Work TekTalk, Mar 2012
The document discusses metrics for measuring system availability and reliability such as MTBF, MTTR, and various "nines" of availability. It notes that while increasing availability is important, reducing recovery time after failures through measures like redundant systems, data replication, and disaster recovery plans is also crucial. The key metrics are recovery time objective (RTO) and recovery point objective (RPO) which specify how long a system can be down and how much data can be lost respectively. The document concludes that the right approach depends on each system's specific requirements and that failures will inevitably occur, so the focus should be on rapid recovery.
DFM Design Principles
The document discusses key principles of design for manufacturing (DFM) including minimizing part count, using standard components and materials, designing for tolerances, collaborating with manufacturing, and understanding production processes and costs. It emphasizes reducing costs at each stage of production from components to assembly to overhead. Designs should be optimized through an iterative process of cost analysis and redesign while considering production volumes and other factors.
Fundamentals of reliability engineering and applications part3of3
This is a three parts lecture series. The parts will cover the basics and fundamentals of reliability engineering. Part 1 begins with introduction of reliability definition and other reliability characteristics and measurements. It will be followed by reliability calculation, estimation of failure rates and understanding of the implications of failure rates on system maintenance and replacements in Part 2. Then Part 3 will cover the most important and practical failure time distributions and how to obtain the parameters of the distributions and interpretations of these parameters. Hands-on computations of the failure rates and the estimation of the failure time distribution parameters will be conducted using standard Microsoft Excel.
Part 3. Failure Time Distributions
1.Constant failure rate distributions
2.Increasing failure rate distributions
3.Decreasing failure rate distributions
4.Weibull Analysis – Why use Weibull?
Fundamentals of reliability engineering and applications part1of3
This is a three parts lecture series. The parts will cover the basics and fundamentals of reliability engineering. Part 1 begins with introduction of reliability definition and other reliability characteristics and measurements. It will be followed by reliability calculation, estimation of failure rates and understanding of the implications of failure rates on system maintenance and replacements in Part 2. Then Part 3 will cover the most important and practical failure time distributions and how to obtain the parameters of the distributions and interpretations of these parameters. Hands-on computations of the failure rates and the estimation of the failure time distribution parameters will be conducted using standard Microsoft Excel.
Part 1. Reliability Definitions
1.Reliability---Time dependent characteristic
2.Failure rate
3.Mean Time to Failure
4.Availability
5.Mean residual life
overview of reliability engineering
This seminar session provides an overview of major aspects of reliability engineering, including general introduction of reliability engineering (definition of reliability, function of reliability engineering, a brief history of reliability, etc.), reliability basics (metrics used in reliability, commonly-used probability distributions in reliability, bathtub curve, reliability demonstration test planning, confidence intervals, Bayesian statistics application in reliability, strength-stress interference theory, etc.), accelerated life testing (ALT) (types of ALT, Arrhenius model, inverse power law model, Eyring model, temperature-humidity model, etc.), reliability growth (reliability-based growth models, MTBF-based growth model, etc.), systems reliability & availability (reliability block diagram, non-repairable or repairable systems, reliability modeling of series systems, parallel systems, standby systems, and complex systems, load sharing reliability, reliability allocation, system availability, Monte Carlo simulation, etc.), and degradation-based reliability (introduction of degradation-based reliability, difference between traditional reliability and degradation-based reliability, etc.).
A Proposal for an Alternative to MTBF/MTTF
The document discusses potential issues with using MTBF/MTTF as the primary reliability metric for the defense and aerospace industries. It argues that MTBF/MTTF provides an incomplete view of reliability across the entire product lifecycle and can result in overly optimistic assessments. The document proposes using an alternative metric called Bx/Lx, which specifies the life point where no more than a certain percentage (like 10%) of failures have occurred. This provides a more comprehensive view of reliability focused on early failures. Overall, the document advocates updating reliability metrics and practices to better reflect physical failure mechanisms.
basic concepts of reliability
Fault tolerance refers to a system's ability to continue operating correctly even if some components fail. There are three categories of faults: transient, intermittent, and permanent. Fault tolerance is achieved through redundancy, including information, time, and physical redundancy. Reliability is the probability a system will function as intended for a given time. It depends on design, components, and environment. Reliability increases through quality control and redundancy. Maintainability is the probability a failed system can be repaired within a time limit. Availability is the probability a system will be operational when needed. Series systems fail if any component fails, while parallel systems fail only if all components fail.
Design for Assembly (DFA)
Design for Assembly (DFA) is a vital component of concurrent engineering – the multidisciplinary approach to product development. You might think it strange to begin by thinking about the assembly before you have designed all the components, but you can often eliminate many parts at the conceptual stage, and save yourself a lot of trouble.
This slideshow provides an introduction to the rules that are used in industry to produce affordable, reliable products. It includes the in-depth analysis of two real-world products subjected to a "product autopsy", detailed in photographs, plus tutor notes and recommendations for additional activities including an assembly game.
+++
Thanks for all the interest shown in this presentation... visit Capacify and leave me a message if you have any questions or comments. Also let me know if you'd like to have me as a guest speaker: the in-class 'ease of assembly game' is always fun.
DFMA design for manufacturing and assembly
Purpose Statement:
To provide an overview of Design for Manufacturing and Assembly (DFMA) techniques, which are used to minimize product cost through design and process improvements.
Chapter 5 basic design for manufacturing
1. DFM decisions affect all aspects of the design from conception through production.
2. It is important to consider costs, production methods, time, material availability, and how design impacts performance.
3. Ways to reduce costs include using cheaper materials, less material, standardizing components, and designing for economies of scale in production.
Design for Reliability (DfR) Seminar
This document provides an overview of a Design for Reliability (DFR) seminar presented by Mike Silverman of Ops A La Carte LLC. The seminar covers DFR concepts and tools over two days, with sessions on topics like planning for reliability, failure mode analysis, accelerated testing techniques, and root cause analysis. The document includes biographical information about Mike Silverman, the seminar schedule and objectives, an overview of the consulting company Ops A La Carte, and a high-level discussion distinguishing DFR from a "toolbox" approach and outlining the key activities in a structured DFR process.
Reliability engineering ppt-Internship
Authors: (i) Prashanth Lakshmi Narasimhan,
(ii) Mukesh Ravichandran
Industry: Automobile -Auto Ancillary Equipment ( Turbocharger)
This was presented after the completion of our 2 months internship at Turbo Energy Limited during our 3rd Year Summer holidays (2013)
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This document summarizes tester utilization performance from weeks 210-230 and 240-245. It provides utilization percentages for different tester systems, with Fusion FT showing an improvement from 65.6% to 77.6%. The document identifies key issues for different tester types, such as contact problems for Fusion WT, and shows graphs comparing utilization for Fusion before and after using a new pogo ring design. It also discusses actions to address prober accuracy problems, such as classifying probers based on accuracy and inspecting machines.
Tester utilisation definitions
The document defines various time categories used to calculate utilization metrics for semiconductor manufacturing operations. It includes productive time, non-scheduled time like idle or engineering time, scheduled downtime, and standby time. Overall utilization is calculated as the actual output divided by the ideal cycle time, total time is the sum of all time categories, and utilization percentages provide insights into operations, planning, and tester equipment efficiency.
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There were 4 hang issues reported across two wafers and two final testing machines. One wafer had a bad die at coordinates (0,16) that was causing hang problems and could be shipped for further investigation. The hangs on the two final testing machines were resolved by switching operating systems, resetting components, and reloading test programs. The operating system version R10.8.4 seemed to be causing hangs after power cuts but runs successfully after first booting with R10.6.4.p1.
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2) Major findings include high non-schedule time in December due to no orders, and top causes of downtime being type failures, small stops, and handler issues especially with loaders and unloaders.
3) Root cause analyses were performed for different downtime categories to identify improvement areas regarding spare parts, monitoring, equipment stability, and unnecessary program loading.
Fusion improvement
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2) Comparison of Mean Time Between Breakdowns (MTBBF) versus Days of Arrival (DOA) and Days Until Warranty (DUW) failures showing improving rates over time.
3) Fault rates for PECHF and SMS boards being highest in 2004 and 2005 with improvement actions taken.
Fusion material (psk meeting)
The document discusses fusion tester performance and issues. It provides summaries of fusion board usage, failure rates of key boards like PECHF and FARMNT, and outstanding quality issues to address like high board usage and DOA rates. Performance metrics like availability are presented over time periods from July 2004 to April 2005.
Dow duw
This document summarizes quality issues with LTX fusion parts from January to June 2005, finding failure rates of 7.7% for DOA parts and 12.5% for DUW parts. It analyzes the top faulty part numbers and trends showing decreasing MTBBF and increasing SMS digital faults over time. Concerns raised include the sensitivity of fusion systems to power cuts, quality issues leading to high DOA and DUW rates, and potential diagnostics differences between LTX and PSK systems.
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3) The Fusion HF sub-cluster had the highest E-MTBF numbers, reaching over 700 in Q3 2003.
Q2 qrm 2005_ok
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Qrm 2004 final
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- Uptime and MTBF metrics for Fusion HF were mostly meeting targets except for a 2 day shutdown in December 2004 that impacted some numbers.
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- 1. All sites KPI on Fusion & Synchro
- 2. Fusion & Synchro E-MTBF (Electrical Mean Time Between Failure) E-MTBF Site Fusion HF Fusion CS Synchro AC Synchro CPG PSK 386 341 399 PST 657 PSC 430 300 627 ATO5 573 PS: PSK combine Synchro AC & CPG together. Division, Content owner, Date(in numbers), ISO No 2
- 3. MTBF Chart E-MTBF all sites chart 1000 500 0 Synchro Fusion HF Fusion CS Synchro AC CPG PSK 386 341 399 PST 657 PSC 430 300 627 ATO5 573 Division, Content owner, Date(in numbers), ISO No 3
- 4. Fusion & Synchro MTBBF (Mean Time Between Board Failure) MTBBF Site Fusion HF Fusion CS Synchro AC Synchro CPG PSK 560 4320 953 PST 467 PSC 1003 427 423 ATO5 1013 PS: PSK combine Synchro AC & CPG together. Division, Content owner, Date(in numbers), ISO No 4
- 5. MTBBF Chart MTBBF all sites chart 6000 4000 2000 0 Fusion HF Fusion CS Synchro AC Synchro CPG PSK 560 4320 953 PST 467 PSC 1003 427 423 ATO5 1013 Division, Content owner, Date(in numbers), ISO No 5
- 6. Fusion & Synchro Uptime Site Fusion HF Fusion CS Synchro AC Synchro CPG PSK 95.3% 98.1% 92.5% PST 95.1% PSC 98.5% 95.2% 92.0% ATO5 95.7% PS: PSK combine Synchro AC & CPG together. Division, Content owner, Date(in numbers), ISO No 6
- 7. Uptime Chart All sites uptime chart 100.0% 95.0% 90.0% 85.0% Fusi on HF Fusi on CS Synchro AC Synchro CPG PSK 95.3% 98.1% 92.5% PST 95.1% PSC 98.5% 95.2% 92.0% ATO5 95.7% Division, Content owner, Date(in numbers), ISO No 7