where expertise comes together - since 1996 -

The Largest Open Access Portal of Nondestructive Testing (NDT)

Conference Proceedings, Articles, News, Exhibition, Forum, Network and more

where expertise comes together
- since 1996 -
555 views
Technical Discussions
JACKY CHEN
Engineering
Taiwan, Province of China, Joined Aug 2002, 5

JACKY CHEN

Engineering
Taiwan, Province of China,
Joined Aug 2002
5
06:08 Mar-24-2003
EXTREME VALUE STATISTIC

Dear all:

Can anybody tell me what is the "Extreme Value Statistic" means? Also, could anybody tell me where I can get sone information about the "Extreme Value Statictics"?


 
 Reply 
 
Kris Van de Rostyne
Kris Van de Rostyne
06:49 Mar-24-2003
Re: EXTREME VALUE STATISTIC
: Dear all:
.
: Can anybody tell me what is the "Extreme Value Statistic" means? Also, could anybody tell me where I can get sone information about the "Extreme Value Statictics"?
.
Hello,
Extreme value statistics is used in NDT to describe the statistical behavior of local corrosion phenomena like e.g. pitting corrosion. E.g. Leaking of a container will result as soon as ONE ('extreme') pit is as large as the container wall thickness. To predict a maximum expected pit depth from a limited set of measurements, extreme value calculations are required. Care should be taken when sampling the data.
Details can be found in:
*”Introduction to life prediction of industrial plant materials: Application of the extreme value statistical method for corrosion analysis”, editor M. Kowaka, Allerton Press Inc., 1994
*”Extremes: Statistical Theory and Applications in Science, Engineering and Economics”, Editor-in-Chief: H. Rootzén, Kluwer, 1999

Hope this helps,

Kris




 
 Reply 
 
F.Mustapha
F.Mustapha
00:27 Apr-21-2005
Re: EXTREME VALUE STATISTIC
: : Dear all:
: .
: : Can anybody tell me what is the "Extreme Value Statistic" means? Also, could anybody tell me where I can get sone information about the "Extreme Value Statictics"?
: .
: Hello,
: Extreme value statistics is used in NDT to describe the statistical behavior of local corrosion phenomena like e.g. pitting corrosion. E.g. Leaking of a container will result as soon as ONE ('extreme') pit is as large as the container wall thickness. To predict a maximum expected pit depth from a limited set of measurements, extreme value calculations are required. Care should be taken when sampling the data.
: Details can be found in:
: *”Introduction to life prediction of industrial plant materials: Application of the extreme value statistical method for corrosion analysis”, editor M. Kowaka, Allerton Press Inc., 1994
: *”Extremes: Statistical Theory and Applications in Science, Engineering and Economics”, Editor-in-Chief: H. Rootzén, Kluwer, 1999
.
: Hope this helps,
.
: Kris
.

Principle Component Analysis (PCA) is one of EVS methods that have the capability to reduce dimension in vectorial form of data. Try any search engine to get this definition or if you're in doubt you can contact me and i'll send few journals paper that relates with this statistical approaches.

cheers



 
 Reply 
 

Product Spotlight

Immersion systems

ScanMaster ultrasonic immersion systems are designed for high throughput, multi shift operation in a
...
n industrial or lab environment. These fully integrated systems provide various scanning configurations and incorporate conventional and phased arrays technologies to support diverse applications, such as inspection of disks, bars, shafts, billets and plates. All of ScanMaster immersion systems are built from high accuracy scanning frames allowing for scanning of complex parts and include a multi-channel ultrasonic instrument with exceptional performance. The systems are approved by all major manufacturers for C-scan inspection of jet engine forged discs. Together with a comprehensive set of software modules these flexible series of systems provide the customer with the best price performance solutions.
>

SITEX CPSERIES

Teledyne ICM’s CPSERIES has been designed with a view to revolutionizing the handling and perfor
...
mances of portable X-Ray sets. Despite having managed to halve the weight of similar portable X-Ray generators available on the market (while continuing to provide the same power output), the SITEX CPSERIES generators feature a shutter, a laser pointer, a beryllium window, an aluminum filter and two integrated diaphragms (customized sizes are available upon request). Without compromising the robustness and reliability for which ICM products are renowned, the small size and light weight of the SITEX CPSERIES will radically change the way that you perform your RT inspections. And you will see a positive impact in terms of both quality and return on investment (ROI).
>

MUSE Mobile Ultrasonic Equipment

The MUSE, a portable ultrasonic imaging system, was developed for in-field inspections of light-weig
...
ht structures. The MUSE consists of a motor-driven manipulator, a water circulation system for the acoustic coupling and a portable ultrasonic flaw detector (USPC 3010). The MUSE provides images of internal defects (A-, B-,C- and D-scan).
>

A1525 SOLO

A1525 Solo – the most compact and affordable TMF unit with two phased array transducers and 3D v
...
isualization and analysis software in standard delivery set. A compact, ergonomic and easy to handheld Phased Array unit based on Total Focusing Method for easy-going imaging of inspection objects with two-dimensional and three-dimensional visualization and evaluation of inspection results.
>

Share...
We use technical and analytics cookies to ensure that we will give you the best experience of our website - More Info
Accept
top
this is debug window