Subscribe to the gold package and get unlimited access to Shamra Academy
Register a new userEvaluation the technical competence of the thermal mechanical laboratories by using the statistical processing of test results
تقييم الكفاءة الفنية للمخابر الميكانيكية الحرارية من خلال استخدام المعالجة الإحصائية لنتائج الاختبار
1545
1 41
0
(
0
)
Created by
Shamra Editor
Ask ChatGPT about the research
هدف هذا البحث إلى إظهار أهمية استخدام الأساليب الإحصائية في أثناء تأسيس نظام إدارة الجودة في المخبر وفق متطلبات المواصفة القياسية الدولية ISO 17025:2005. وصفَ هذا البحث كيفية التحليل الإحصائي لنتائج الاختبارات، و تضمن دراسة عملية لتقييم الكفاءة الفنية للمخبر عن طريق استخدام أكثر الأساليب الإحصائية شيوعياً (اختبار الفرضيات) لمعالجة النتائج بطريقة علمية تمكن الباحثين من تحديد نقاط الضعف في أداء المخبر، و من ثَم تزويده بتغذية راجعة و نصائح تقنية تساعد في تحديد مشكلات القياس و التأكد من صحة نتائج الاختبار، و كما قَدم توصيات و مقترحات كضرورة تطبيق أساليب عملية لمراقبة أداء الاختبارات و التأكد من أنها تفي بمتطلبات الجودة من حيث الدقة و الصحة، و العمل على إزالة الأسباب التي تؤثر في جودة الأداء خلال مراحل إجراء الاختبار كّلها، هذه المقترحات من شأنها إذا ما عملَ بموجبها أن تساعد المخبر في الحصول على شهادة الاعتماد الدولية وفق المواصفة ISO 17025:2005.
This research aims to present the importance of using statistical methods while establishing a quality management system in the laboratory according to the requirements of the international standard ISO 17025:2005. In addition the research describes how statistical analysis of the tests results works and includes a practical study to evaluate the technical competence of the laboratory by using the most common statistical methods (hypothesis testing) to study the results in a scientific way enables researchers to identify weaknesses in the laboratory performance, and thus provides it with feedback and technical advice helping to determine measurement problems and to check the Trueness of tests results. Finally, the research provides recommendations and proposals such as a necessity of applying practical methods for monitoring the performance of tests , making sure they meet quality requirements in terms of trueness and precision , and working to remove the causes that affect the quality of performance during all phases of testing, these proposals would – if they have been applied – support the laboratory to obtain the certification in accordance with international standard ISO 17025:2005.
References used
Childs Peter R.N, Practical Temperature Measurement, Elsevier Inc, 2001
Giampaolo Tony, Gas turbine handbook: principles and practices, Third Edition, The Fairmont Press Inc, 2006
ISO 5725-1,1994- Accuracy (trueness and precision) of measurement methods and results – Part 1 General principles and definitions.1st.ed, ISO,17P
rate research
Read More
Participation in inter-laboratory comparison programs is an important means of laboratory quality
control and assessing laboratory performance, and these programs can be used by customers or
regulatory bodies for the selection of qualified laborato
ries.
This research describes how to use inter-comparison tests and how to statistically analyse the test
results.
This research has a practical study of assessing laboratories performance in laboratories of the Syrian
textile firms by distributing samples simultaneously to participating laboratories for testing. After
collecting test results, the researcher used scientific methods to handle data to identify the weak points
in laboratories performance and provide them the Feedback and technical advice to Assistance the lab
to defining the measurement problems and evaluating of test methods and instrumentation , and could
introduce some suggestions and recommendations to overcome.
This research aims to show the importance of ensuring the
competence of all who operate specific equipment, perform tests
and/or calibrations, evaluate results, and sign test reports and
calibration certificates.
errite (x=0.5) was prepared by a well-known conventional ceramic double sintering method (CCDS). Force constant K was calculated for tetrahedral and octahedral sites. The elastic constant C11, bulk modulus B , longitudinal and shear wave velocities w
ere calculated. Threshold frequency for electronic transition was determined using IR spectra. In addition, the drift mobility for tetrahedral and octahedral sites, as well as magnetic dipole moment changes for bond were determined. The area beneath endothermic peaks was correlated to the weight change TG%. On the other hand, the heat capacity under constant pressure CP was correlated to sample treatment temperature. It has been noticed that the CP has a critical value at 175.
The research aims to estimate the effect of sample size on the statistical test
power (t) for one sample, two interrelated samples, two independent samples,
and on the statistical test power of one-way analysis of variance test (F) to
compare the
averages. The descriptive method was used, and different sizes
of samples (300) items, where it was generated using the program (PASS 14),
and taken into account to be realized in this data the set of assumptions
needed to make test (t) and (F), with respect to random testing, categorical
level of measurement, normal distribution, and equinoctial variance.
Machine developing aimsto improve its velocity, capability and production,this is
accompanied by increase of Mechanical side effects and the dynamical loads between the
Machines elements and parts, that may conduct to rise the Mechanical vibrations
and may
cause a lot of damage in these machines, and cause negative effects on the
environmentaround these machines, the study of Mechanical vibrations has a significant
importance for engineering and technical students, to have knowledge of Mechanical
vibrations that may arise in the machines under design process, or to study the mechanical
vibrations resulting in the machines under use to isolate these vibrations and attenuate of
its negative effects, for that we introduced an simulation program to show and illustrate a
method to simulate some mathematical models representing some of possible types of
vibrations, and to determine the most important parameters that describe the different
vibrations motions, we choose an suitable programing language to merge this simulated
models with an illustration and learning texts and drawings and animations in one
executable application, this application show the models and the results in simple and very
clear manner, and show the results in high resolution comparing with other programing
languages.
Log in to be able to interact and post comments
comments
Fetching comments
Sign in to be able to follow your search criteria
