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 -
482 views
Technical Discussions
myaakov
myaakov
02:44 Mar-05-2001
temper etch

I would like to hear the opinion of people using the barkausen noise method to reveal temper etch phenomena.

Thanks Myaakov@excite.com



 
 Reply 
 
Dave Ronson
Dave Ronson
08:25 Mar-06-2001
Re: temper etch
: I would like to hear the opinion of people using the barkausen noise method to reveal temper etch phenomena.
.
: Thanks Myaakov@excite.com
.
We have been using Barkhausen noise for evaluating grinding processes for about 5 years now with great success. It prevented us having to spend a substantial amounts of money on a room to house the etching process, especially with the low flash point of the alcohol rinse.
I guess the only down side to the Barkhausen Noise Inspection process is the need for known burn standards to initally establish the settings. Fixturing to hold the parts is also needed.
We have always followed up with a swab nital etch when ever we found excessive stresses identified with the Barkhausen, and in all cases, we were able to verify the condition.
We have trained our machinists on how to use the machine and they attach a readout of the scan with the work order. We have yet to try and establish standards with chrome on them to look at stress slightly below the chrome plating, which would also be beneficial for us.


 
 Reply 
 

Product Spotlight

EKOSCAN Phased Array

In order to always fit your needs, EKOSCAN can manufacture any type of UT transducer, either convent
...
ional or Phased Array. As an ISO 9001: 2015 certified company, EKOSCAN is extremely careful as far a material selection and manufacturing processes are concerned. Our probes guarantee our customers the benefits of latest innovations regarding piezo-composite, backing, impedance adaptation layer, etc. Specific probes for hostile environment: high temperature, high pressure, corrosive environment,etc. Specific probes designed to fit your specific application: optimization of every parameter to guarantee you the best detection.
>

IRIS 9000Plus - Introducing the next generation of heat exchanger inspection.

Representing the seventh generation of the IRIS system, the IRIS 9000 Plus has nearly 200 years of c
...
ombined field inspection experience incorporated in its design. This experience combined with a strong commitment to quality and a history of innovation has made Iris Inspection Services® the undisputed leader in IRIS technology.
>

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.
>

FD800 Bench Top Flaw Detectors

The bench-top FD800 flaw detector range combines state-of-the-art flaw detection with advanced mater
...
ial thickness capabilities. Designed for use in the laboratory these gauges are the tool you need for all your flaw detecting needs.
>

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