Your Reliability Engineering Professional Development Site
Dear friends, we are happy to release this video on Acceptance Sampling plans for Attributes. In the video, Hemant Urdhwareshe explains how to select appropriate sample size using Sampling Plans such as MIL-STd-105E, ANSI/ASQ Z1.4, IS 2500 Part-1 (or ISO2959 -1). The video also explains interpretation of Operating Characteristics from the standards and in Microsoft Excel. Additionally, Hemant also illustrates how to generate a Sampling Plan in Minitab software.
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Dear friends, I am happy to share our first video on Quality Control Acceptance Sampling Plans! In this video, I have explained some basic concepts and terminology of sampling plans. I have also illustrated use of Microsoft Excel to construct Operating Characteristic Curve and AOQ Curve of a sampling plan It is not possible to inspect 100% parts received from suppliers. Obviously, processes need to be capable to produce consistently good quality parts that conform to the specifications. However, there are quite a few processes where the capabilities are either marginal or low. Also, controls at suppliers may not be adequate due to many reasons. Therefore there is still a need for statistical Acceptance Sampling Plans.
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Dear friends, I am happy to release this video on reliability analysis of life data with multiple failure modes. The analysis procedure is illustrated fully in Minitab software with a real-life case study with six failure modes. The concept is that when a system fails for one failure mode at time t, this data of time is right censored data for other failure modes! Analysis in Minitab can be performed in one single command!
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Dear Friends, I am happy to release this video on a very important and fundamental statistical concept of Central Limit Theorem (CLT). The CLT forms basic for statistical control charts, hypothesis tests, ANOVA etc. I am sure, you will find the video useful!
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Dear friends, In this video, Hemant Urdhwareshe explains the concepts of linearity, center point and orthogonality in Experimental Designs! The video is created to understand these concepts with simple illustrations! We are sure, you will find this video useful!
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Dear friends, Hemant Urdhwareshe explains concepts of statistical degrees of freedom and replication in Design of Experiments (DOE). Hope you find this interesting and useful.
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Dear friends, this video illustrates how to create and analyze a fractional factorial design using Minitab software with an application example. You can watch our other video on basic concepts in Fractional Factorial Designs: DOE-5: Fractional Factorial Designs, Confounding and Resolution Codes. You can watch all our videos on DOE by clicking here to see the playlist: DOE-2: Application of Design of Experiments. We hope you are finding our videos useful!
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Dear friends, many of you have requested for more videos about Design of Experiments. In this video, Hemant Urdhwareshe explains basic terms and definitions in DOE. These include OFAT vs DOE, Types of Factors, Levels, treatments, steps in DOE, nuisance or noise factors, blocking, randomization, covariates, etc. Hope you find this video useful to understand these basic concepts.
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Dear friends, some of the participants in our training programs requested me to make a video on how to use Excel to plot histograms and descriptive statistics using Analysis ToolPak. This video illustrates how to do this for a sample data of admit time of patients in a hospital. Hope you find this useful.
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Dear friends, Institute of Quality and Reliability is happy to release this video on Reliability Testing Sampling Plans. In this is Part-2 of the video, Hemant Urdhwareshe has explained the Probability Ratio Sequential Test (PRST) and Fixed Length plans from MIL-Handbook-781. These include illustrated explanation of the plans and applicability.
We are sure, viewers will find this video useful!
Earlier, we released part 1 of the video, in which Hemant explained the concepts of sampling risks and operating characteristics (OC) curves.
We also suggest viewers to see our related videos on Hazard Rate and related concepts for better understanding of this video.
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Dear friends, Institute of Quality and Reliability is happy to release this video on Reliability Sampling Plans. In this is Part-1 of the video, Hemant Urdhwareshe has explained the basic concepts in Sampling plans. These include Sampling Risks and Operating Characteristics. We are sure, viewers will find this video useful!
We will release part-2 of the video where Hemant will explain Fixed Length Reliability Test Plans and Sequential Test Plans (PRST).
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This is my second video on Sample Size in Reliability Testing! In this video, we will explain the Weibayes Approach to estimate sample size and estimating test length when sample size and shape parameter is known.
[Read more…]Dear friends, I am happy to release this video about determining sample size in reliability and functional testing! The video discusses determining sample size with Success Run Theorem (or Success Testing) will zero failures as well as given number of failures. I have illustrated use of basic formula and calculation as well as use of various templates to determine sample size. Hope you find this important and interesting!
This is part-1 of my videos on sample size! We recommend viewers to watch our video on Binomial Distribution before watching this video, in case they have not seen it before
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Dear friends, this is part-2 of our video on Design of Experiments using Minitab. In part-1, Hemant Urdhwareshe had explained how to create design using Minitab. In this part-2 of the video, Hemant has illustrated complete details of analysis of the design using Minitab. Analysis includes interpretation of Minitab output in voice and text!
We are sure, you will find this video extremely useful for Quality Practitioners, Reliability Engineers, Design and Process Engineers, Six Sigma Professionals, Design for Six Sigma practitioners. Some corrections at 5:21 — The R-sq value is 95.45, R-sq Adjusted is 92.53 and R-sq Predicted is 86.63%. There is some error in these figures in the video. Apologise for the oversight.
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