Compression

 

Overview

Compression Transducers .jpg

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

Small/Large Single Compression Ceramic Face (SHM & LHM)

  • Single normal beam compression wave contact probe.
  • Circular, lead metaniobate crystal.
  • Medium damped for medium bandwidth.
  • European Standard Transducer.

Frequent applications: Ceramics, Composites, Machined Parts, Thickness Measurements.

Small/Large Single Compression Replacable Membrane (SMM & LMM)

  • Single normal beam compression wave contact probe.
  • Circular, lead metaniobate crystal.
  • Medium damped for medium bandwidth.
  • European Standard Transducer.

Frequent applications: Bars, Billets, Bond testing, Castings, Lamination, Forgings.

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.

Single Compression (RB)

  • Single normal beam compression wave contact probe.
  • Excellent near surface resolution
  • Circular, lead metaniobate crystal.
  • High damped for wide bandwidth.
  • Rubber ball delay line with slight focus.

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.

Dual Element Integral Cable Transducers (DEI & PDEI)

  • Dual normal beam compression wave contact probes.
  • Lead metaniobate crystal (DEI/PD).
  • Medium damped for medium bandwidth (DEI/PD).
  • Composite Crystal (PDEI).
  • High damped for wide bandwidth (PDEI).
  • Cable connection entry can be at the side or top.

Frequent applications: Aerospace, Bond Testing, Brazed Joints, Machined Parts, Thickness, Tube & Pipe, White Metals.

Delay Line Transducers (RDT & PD)

  • 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.

Immersion Transducers (IMR, IMG or PIM)

  • Single immersion beam compression wave immersion probe.
  • Circular, Lead metaniobate crystal.
  • High damped for wide bandwidth (IMR)
  • Medium damped for medium bandwidth (IMG).
  • Composite crystal for wide bandwidth, high output (PIM)
  • Spherical (point focus) or Cylindrical (line focus) available as an extra option.

Magnetic Probes (MAG)

  • Normal beam compression probe.
  • Circular lead metaniobate crystal.
  • Medium damped with ceramic wear face.
  • Built-in magnet to hold probe to ferrous surfaces.

Frequent applications: Thickness Measurement.

Dual Element (DL)

  • Dual element, normal beam compression wave probe.
  • Small diameter and long reach.
  • Lead metaniobate crystal.
  • Medium damped.

Frequent applications: Long reach probes for inspection through insulation layers, Thickness measurements in conjunction with thickness gauges.



Downloads

DateTitleVersionSize 
Sept 2017SIRIUS - SHM & LHM Specification pdfV2Download
Sept 2017SIRIUS - SMM & LMM Specification pdfV2Download
Sept 2017SIRIUS - THM Specification pdfV2 Download
Sept 2017SLM & PSLM Specification pdfV2Download
Sept 2017SLF & PSLF Specification pdfV2Download
Sept 2017FCR FCG & PFC Specification pdfV2Download
Sept 2017DEM & PDEM Specification pdfV2Download
Sept 2017DEI & PDEI Specification pdfV2Download
Sept 2017RDT & PD Specification pdfV2Download
Sept 2017IMR IMG or PIM Specification pdfV2Download
Sept 2017MAG & DL Specification pdfV2Download
DateTitleVersionSize 
Jan 2018STARC2-10 Data SheetV1Download
Jan 2018STARC2-15 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 2018STARC4-15 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 2018TSTARC2-15 Data Sheetv1Download
Jan 2018TSTARC2-20 Data Sheetv1Download
Jan 2018TSTARC4-10 Data Sheetv1Download
Jan 2018TSTARC4-15 Data Sheetv1Download
Jan 2018TSTARC4-20 Data Sheetv1Download

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