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 -

554 views
Technical Discussions
Joe
NDT Inspector
AECL, Canada, Joined Apr 2000, 3

Joe

NDT Inspector
AECL,
Canada,
Joined Apr 2000
3
07:36 May-04-2001
Aluminum Core Inspection

Dear Members
I have been requested to do an inspection on extruded Aluminum approx. 0.250" dia type 5052 for detection of cracking/voids...We are a research facility and have access to real time radiograpy as well as eddy current and ultrasonic methods, I am looking for any ideas as to which may be the best method for detection
Regards


    
 
 
Tom Nelligan
Engineering,
retired, USA, Joined Nov 1998, 390

Tom Nelligan

Engineering,
retired,
USA,
Joined Nov 1998
390
09:52 May-04-2001
Re: Aluminum Core Inspection
If you're looking for wormhole-type voids in the center of the rod, a single channel ultrasonic system should pick them up easily and at relatively low cost. However, true 100% volumetric UT inspection of solid cylinders for small voids or cracks requires either spinning and indexing the test pieces, often using two or more channels of instrumentation, or using multi-channel systems with sector arrays or multiple transducers on a non-rotating part. I'm afraid these can get very expensive -- we've supplied some specialized 10-channel sector array systems for continuous, high resolution inspection of cylindrical products, and price is many times that of a simple single-channel system with a standard transducer.

The questions you'll need to consider for any NDT method will be how small an anomaly you need to find, how are they oriented, and whether you need to look at 100% of the cross section of the rod or can settle for some lesser area.

--Tom Nelligan
Panametrics, Inc.


: I have been requested to do an inspection on extruded Aluminum approx. 0.250" dia type 5052 for detection of cracking/voids...We are a research facility and have access to real time radiograpy as well as eddy current and ultrasonic methods, I am looking for any ideas as to which may be the best method for detection



    
 
 
Jim Knowles
Jim Knowles
00:39 May-04-2001
Re: Aluminum Core Inspection
: If you're looking for wormhole-type voids in the center of the rod, a single channel ultrasonic system should pick them up easily and at relatively low cost. However, true 100% volumetric UT inspection of solid cylinders for small voids or cracks requires either spinning and indexing the test pieces, often using two or more channels of instrumentation, or using multi-channel systems with sector arrays or multiple transducers on a non-rotating part. I'm afraid these can get very expensive -- we've supplied some specialized 10-channel sector array systems for continuous, high resolution inspection of cylindrical products, and price is many times that of a simple single-channel system with a standard transducer.
.
: The questions you'll need to consider for any NDT method will be how small an anomaly you need to find, how are they oriented, and whether you need to look at 100% of the cross section of the rod or can settle for some lesser area.
.
: --Tom Nelligan
: Panametrics, Inc.
.
:
: : I have been requested to do an inspection on extruded Aluminum approx. 0.250" dia type 5052 for detection of cracking/voids...We are a research facility and have access to real time radiograpy as well as eddy current and ultrasonic methods, I am looking for any ideas as to which may be the best method for detection
.
From Jim Knowles C S Products Testing Equipment Ltd
I have just finished a scanner for the detection of 0.25 mm corrosion pits, a three 15MHz transducer system using an immersion technique containing the acoustic coupling in water, coupled to ultrasonic system and producing C,B &D scan data.
I would see that an adaptation of the same system would be capabale of seeing , positioning and sizing the defects in your material.
Also I have been working on a digital imaging system 16bit 1024 x 1024 peltier cooled detection system capable of detection 50 micron defects in stainles or Zirconium, both systems as I see it are viable, but costs come into it.


    
 
 

Product Spotlight

NOVO Armor 15 & NOVO Armor 22

The Armor Kit Contains the NOVO Armor, which provides additional mechanical protection to the NOVO 1
...
5WN & NOVO 22WN Detectors, the Armor Stand and a traveling soft cover. - Newest shock absorbent technology case - Water resistant design - Supports wired & wireless communication - Multiple positioning options - Tripod connection using the Built-in 1/4” threads - Simple Detector battery replacement
>

NEOS III

NEOS III is Logos Imagings lightest DR system. With a built-in battery and internal wireless commu
...
nication, the NEOS III is perfect for users that want to quickly assess an item.
>

High-performance Linear Phased Array Probes

Available to order from stock in a range of 5MHz – 7.5MHz and from 16 to 64 elements. Designed w
...
ith piezo-composite elements, Phoenix phased array probes provide high-resolution imaging to maximise sensitivity; accurate ultrasonic detection and sizing of defects in welds; and effective corrosion mapping. Housed in a rugged stainless steel case for on-site industrial NDT applications.
>

IntraPhase Athena Phased Array System

The Athena Phased Array system, manufactured by WesDyne NDE Products & Technology, consists of a pha
...
sed array acquisition system and PC running IntraSpect software. A PC is used to perform acquisition, analysis and storage of the data. System hardware is capable of operating up to four data sets with any combination of phased array or conventional UT probes. NOW AVAILABLE IN 64-64 CONFIGURATION.
>

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