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 -

Iris Inspection Services, Inc.
We are the world's largest supplier of air cooler, boiler and exchanger tubing inspection services.

303 views
Technical Discussions
Duan Xinfang
R & D, Researcher of wood quality
Chinese Academy of Forestry, China, Joined Jan 2001, 4

Duan Xinfang

R & D, Researcher of wood quality
Chinese Academy of Forestry,
China,
Joined Jan 2001
4
05:58 Mar-24-2002
seeking documents about UT NDT to ancient wood

Dear friends,

Recently we are carrying out one project for Evaluation of safety of old wood structure of ancinet temples by NDT. We used Fakopp,PUNDIT to measure the decay or rot of old wood pole.But I have not the reference speed of dry wood for Picea species and other wood species by ultrasonic measurement. IN the Sylvatest Operation Guide Book, they gave the reference speed of Picea is 1600m/s, this is for living tree, but not for dry wood.

So does anyone tell me the reference speed of dry wood for Picea and other species or provide the website?
Thanks a lot.




    
 
 
Greg
Greg
02:57 Mar-28-2002
Re: seeking documents about UT NDT to ancient wood
The material velocity for any substance can be determined from known thickness samples. A range of mechanical measurements are taken and the measuring devices' velocity controls adjusted to concur. Many devices perform this function automatically. This primary reference is preferable to table values as it compensates for temperature, humidity etc.




    
 
 

Product Spotlight

Aerospace Systems - Automated Ultrasonic Inspection

USL are specialists in the design and manufacture of turnkey ultrasonic inspection systems for aer
...
ospace applications. From monolithic composites to complex honeycomb structures. This video shows just a few examples of what is possible, find out more at: www.ultrasonic-sciences.co.uk
>

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.
>

Exertus Dual 120

The Exertus Dual 120 Projector has the ability to accept Iridium 192 sources or Selenium 75 source
...
s. This projector incorporates design and safety features that make it flexible, compact and lightweight. The Projector is lighter than most of its competitors. It incorporates an improved source channel, based on a new helicoidal design, which makes maintenance easier. The helicoidal design also allows smoother movement of the source assembly inside the device, making it easier for the operator and improving safety. The Projector also has a unique safety feature not found in competitive products. The source assembly locking mechanism is triggered by the source holder capsule at the front of the source assembly, thereby always assuring the operator that the source has returned to the safe position. The Exertus Dual 120 is ISO3999:2004 compliant.
>

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
>

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
s