Composite wind turbine blade
 

 

Inspection services

Wavelength NDT offer inspection services using industry standard flaw detectors and phased array equipment. We can also develop bespoke equipment for non standard inspections as part of our consultancy service. All inspectors are Level II certified according to EN 4179, NAS 410 and SNT-TC-1A. Inspectors are also trained in advanced techniques including automated testing (e.g. immersion C-scan) and other computer based inspection and analysis methods.

The company is experienced in inspecting both composite and metallic structures in a range of industries and environments (in-service, production etc.) using standard and in-house inspection procedures. Where required by the client, procedures developed by Wavelength NDT can be approved by an independent Level III service provider.

Wavelength NDT are routinely inspecting:

  • Ocean racing and super yachts (hull, mast, keel).
  • Composite aerospace components (monolithic, cored, radius components).
  • Wind turbine blades (monolithic, cored).
  • Composite components during manufacture and in-service.
  • Steel structure for corrosion mapping/monitoring.

If your application or requirement is not listed on this website please contact us - we have probably tested something similar and can advise you on how to proceed.

We travel extensively within the UK and worldwide. Our mission is to offer a fast response to your enquiry, delivering a high quality and reliable inspection service based on strong customer support and technical rigour.

In-service inspection

Wavelength NDT routinely perform in-service inspection of composite and metallic structures. Known production defects can be monitored and checked during the service life of the structure. In-service damage can be assessed and detailed information on the size, exact location and type of defect can be provided. NDT can then be used to assess the quality of repairs to the structure.

Production inspection

Ultrasound inspection of components during production can give reassurance to both the manufacturer and customer that the structure has been built as the designer intended. Inspection during prototyping can also bring many benefits; allowing the manufacturer to quickly identify potential production problems and assess various material properties before full-scale production starts.

Inspection equipment

Wavelength NDT have a large inventory of inspection equipment including an immersion scanning tank and a wide range of portable equipment. We are utilising and developing inspection techniques for the following equipment:

  • Ultrasonic flaw detectors for high and low frequency inspections.
  • Ultrasonic phased array equipment.
  • Immersion ultrasonic scanning systems.
  • Bond testing equipment (resonance, acoustic pitch-catch, mechanical impedance).
  • Digital tap tester.

Wavelength NDT also regularly hire equipment from all the major NDT suppliers as required by the customer or application.

Inspection types

The following flash movies aim to show the basic inspection types that are commonly used for NDT of engineering structures.

A-scan

This is the standard inspection method and relies on the operator to move the ultrasound probe over the surface of the structure. At each measurement location the operator checks the reading on the flaw detector and, if required, marks the position of the defect on the structure.

B-scan

A B-scan is constructed from a series of A-scan signals when the ultrasound beam is moved over the structure by mechanical means or by using an array of sensors. The B-scan image shows a cross-sectional view through the structure and is particularly useful for analysing ply orientation in carbon fibre laminates or recording wall loss on corroding steel structures.

C-scan

A C-scan image is constructed by moving the ultrasound beam over the surface of the structure. At each measurement position, the depth and amplitude of diagnostic echoes within the A-scan signal are recorded. The C-scan image then shows a plan view of the recorded data revealing the size, orientation and location of defects.

 

A-scan testing of composite mast head

C-scan test of mast tube

A-scan testing in the rain

Digital tap testing of Nomex structure

Damaged area marked out after tap testing

A-scan angle beam crack testing on keel radius

Diagram of angle beam a-scan testing on keel

Mapping of damage region using A-scan techniques

Thickness C-scan showing depth of delaminations in impact zone

Amplitude C-scan showing edges of delaminations in impact zone

 

 

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