Compression


Overview

There are four different offering in single and dual "straight beam″ transducers:

Contact

Applied directly to the flat surfaces of the test material or object, this range of single element transducers are commonly used to measure thickness and to detect flaws on plates, bars, forgings, casting and extrusions. Standard ranges of single compression transducers are available with different frequencies and damping specifications to fit the purpose of the application. The crystal and casing dimensions are also important, per example a smaller diameter can be applied to test slightly curved surfaces and the inclusion of a magnet can hold the transducer to ferrous surfaces.

Twin Crystal

A twin compression transducer is a mix between a contact and a delay line because both crystals (P&C) sit on two very thin, slightly angulated wedges facing each other. These are primarily used to measure thickness, detect flaws and corrosion in thin materials, especially where near surface resolution is required. This range is also ideal for use in general and critical weld inspection.

 

Delay Line

Delay Line transducers transmit and receive sound waves with one element, coupled to the surface as with compression transducers. The crystal is held off from the test piece surface by a delay block, allowing the inspection to be carried out very close to the test piece surface.

 

Immersion

Immersion transducers are mainly used for mechanised or automatic systems and in principle, operate in the same way as standard contact compression transducers. Immersion applications take place in immersion tanks filled with water, where the test object is placed on a turntable or roller system so that the object is moved at a constant speed past the transducer. Applications include flaw detection in metal or composite parts inspecting bond testing or online thickness gauging, C-scan or B-scan imaging of components.

 

 

Features

STARC

  • Single normal beam compression wave contact probe
  • Circular, Lead Zirconate Titanate crystal
  • High damped for wide bandwidth
  • Ceramic wear face to prolong service life

Frequent applications: Bars, Billets, Castings, Ceramics, Composites, Lamination, Forgings, Machined Parts.

TSTARC

  • Twin normal beam compression wave contact probe
  • Circular, Lead Zirconate Titanate crystal
  • Medium damped for medium bandwidth
  • Available with high temperature (HT) and short focus (F) shoes

Single Compression High Damped (SLM & PSLM)

  • Single normal beam compression wave contact probe.
  • Circular, lead metaniobate crystal (SLM)
  • Circular composite crystal (PSLM)
  • Medium damped for general use (SLM)
  • High damped for bandwidth (PSLM).
  • Ceramic wear face and steel wear ring to prolong service life.
  • Stainless steel ergonomic case for good grip and ease of use.

Frequent applications: Ceramics, Composites, Machined parts.

Single Compression Replaceable Membrane (SLF & PSLF)

  • Single normal beam compression wave contact probe.
  • Circular, lead metaniobate crystal (SLF).
  • Circular, composite crystal (PSLF).
  • Medium damped for general use (SLF).
  • Polymer membrane protected face facilitates coupling with minimum couplant.
  • Ceramic wear face and steel wear ring to prolong surface life.
  • Stainless steel ergonomic case for good grip and ease of use.
  • Delay lines available.
  • High resolution (SLFHR) available upon request.

Frequent applications: Castings & Forgings, Bars & Billets, Bond Testing, Laminations.

 

Fingertip Contact Transducers (FCR, FCG & PFC)

  • Single normal beam compression wave contact probe.
  • Circular, lead metaniobate crystal.
  • High damped for wide bandwidth (FCR & PFC).
  • Medium damped for medium bandwidth (FCG).
  • Ceramic wear face and steel wear ring to prolong service life.
  • Stainless steel ergonomic case for good grip and ease of use.

Frequent applications: Castings & Forgings, Bars & Billets, Bond Testing, Laminations, Machined Parts.

Dual Element Transducers (DEM & PDEM)

  • Dual normal beam compression wave contact probe.
  • Lead metaniobate crystal (DEM)
  • Composite Crystal (PDEM)
  • Medium damped for medium bandwidth.

Frequent applications: Aerospace, Bars & Billets, Bond Testing, Castings, Ceramics, Composites, Lamination, Forgings, Machined Parts, Thickness, Tube & Pipe, White Metals.

 

Delay Line Transducers (RDT)

  • Single normal beam compression wave contact probe.
  • Provide excellent near surface resolution.
  • Circular lead metaniobate crystal.
  • High damped for wide bandwidth.
  • Rexolite Delayline.
  • Special sizes, high temperature delay lines are available on request.

Frequent applications: Aerospace, Bond Testing, Composites, Glass, Brazed Joints, Machines Parts, Thickness, Tube & Pipe.

DL

  • Dual normal beam compression wave
    contact probe
  • Semi-circular/rectangular, lead
    metaniobate crystal.
  • Medium damped for medium
    bandwidth.
  • Acrylic shoe facilities profiling to
    curved parts; * High Temp Vespel.
  • Button probe case with side entry
    cable to facilitate inspection access.
  • Integral 2m cable.

 

 

 

 

 

 

 

 

Downloads

DateTitleVersionSize 
Oct 2019SLM & PSLM Specification pdfv3Download
Oct 2019SLF & PSLF Specification pdfv3Download
Oct 2019FCR & PFC Specification pdfv3Download
Oct 2019FCG Specification pdfv1Download
Oct 2019DEM & PDEM Specification pdfv3Download
Oct 2019RDTSpecification pdfv3Download
Oct 2019Starc Specification pdfv1Download
Oct 2019TStarc Specification pdfv1Download
Oct 2019DL Specification pdfv1Download
DateTitleVersionSize 
Jan 2018STARC2-10 Data SheetV1Download
Jan 2018STARC2-20 Data Sheetv1Download
May 2018STARC2-45 Data Sheetv1Download
May 2018STARC2-60 Data Sheetv1Download
May 2018STARC2-70 Data Sheetv1Download
Jan 2018STARC4-10 Data Sheetv1Download
Jan 2018STARC4-20 Data Sheetv1Download
May 2018STARC4-45 Data Sheetv1Download
May 2018STARC4-60 Data Sheetv1Download
May 2018STARC4-70 Data Sheetv1Download

DateTitleVersionSize 
Jan 2018TSTARC2-10 Data Sheetv1Download
Jan 2018TSTARC2-20 Data Sheetv1Download
Jan 2018TSTARC4-10 Data Sheetv1Download
Jan 2018TSTARC4-20 Data Sheetv1Download