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Inductosense is developing wireless, battery-free, sensors that can be permanently fixed to a product or structure for fast, repeatable inspections of cracks, defects or corrosion. The sensors can operate underneath coatings, insulation or repairs. They are entirely passive and the power and signal are provided remotely by non-contact inductive coupling from a handheld measurement probe . The technology is referred to as the Wireless And Non Destructive (WAND) system.

  • Permanent – through-life repeatable measurements from the same location enabling monitoring over time.
  • Embeddable – battery-free, wireless and compact sensors – can be operating underneath coatings, cladding or repairs
  • Fast – a measurements can be taken in a fraction of a second


WAND Evaluation System

The WAND Evaluation System is ideally suited for measuring the thickness of structures, such as a pipe wall.  It consists of a pack of 20 sensors, a hand-held measurement probe and a sensor fixing kit. The ultrasonic A-scan is displayed on the probe’s screen along with the calculated thickness and the data can also be viewed and analysed using the web-based software.



Evaluation System Specifications
Thickness range 4mm (5MHz) – 100mm (2MHz)
Transducer frequency 2MHz or 5MHz
Min pipe radius 64mm
Probe sensor separation Up to 50mm
Acquisition time <1s
Resolution <0.1mm
Sensor dimensions 65mm diameter,  1mm thick
Max sensor operating temperature 120 deg C


Fast, repeatable, cost-effective inspection

The WAND sensors can be cost-effectively deployed across structures at locations where conventional Non-Destructive Testing (NDT) is undertaken.  Permanent sensing enables repeatable measurements and trending of data over time. Once the sensors are attached the measurement can be taken quickly without accurate alignment saving inspection time and costs.

WAND sensors

Under coatings or insulation

The WAND sensors can be operated underneath a coating or insulation layer. An NDT measurement of the underlying structure can then be taken without removing the layer. This saves the cost, time and down-time of preparing a structure for an inspection.  

Inspection of large structures

The WAND sensors can be permanently fixed on the inside of a structure (such as a wind turbine blade). An inspection on internal components of the structure can then be made by bringing the handheld probe close to the outside. This can facilitate NDT during manufacture and enables through life inspection.

Composite repairs

Composite wraps are often used for internal and external corrosion on pipes and other structures. Once the repair is applied it is usually not possible to monitor the underlying structure using ultrasonic methods. The WAND sensor can be fixed underneath a composite wrap enabling the inspection to be performed on the repaired area.

Remote inspection

Remote inspection

Performing NDT measurements on large structures or difficult to reach structures can require significant skilled manpower, equipment and time. Once the WAND sensor is fixed to a structure, the measurement can be made remotely with the WAND probe electronics fitted to a unmanned vehicle (such as a crawler or drone).


Relevant Publications:

A Feasibility Study of Non-Contact Ultrasonic Sensor for Nuclear Power Plant Inspection

Remote inspection system for impact damage in large composite structure

Monitoring cure and detecting damage in composites with embedded sensors

Health monitoring of composite structures throughout the life cycle

Investigation of Inductively Coupled Ultrasonic Transducer System for NDE

About Us

Inductosense is a spin-out from the Ultrasonics and Non-Destructive Testing Group at the University of Bristol and was formed in 2015. 




Dr. Chenghuan Zhong (Bamboo)

CTO and Founder

Bamboo is leading the technical development of the embedded sensor technology which he developed over the course of his PhD and post-doctoral research.

Dr. Anthony Croxford

Dr. Anthony Croxford

CSO and Founder

Anthony is a reader at the University of Bristol and worked on the development of the embedded sensor technology. He is a member of the British Institute for NDT technical committee.

Prof. Paul Wilcox

Prof. Paul Wilcox

Advisor and Founder

Paul is a professor at the University of Bristol and a recognized expert in NDT. He has previous experience of working in spinout companies and commercialisation of NDT technology.

Dr. Matt Butcher

Dr. Matt Butcher


Matt has extensive experience in developing early stage companies and has undertaken commercial roles and directorships in a variety of engineering companies. 

Chris Brill

Chris Brill


Chris is a successful entrepreneur who has successfully grown three start-ups in to multi-million pound business and won several fast growth awards including the Deloitte & Touche Fast 50 and Sunday Times Techtrack 100 winner.


23rd August 2017: Inductosense secures £1.1m investment round. Find out more here.


14th August 2017: We are recruiting: Technical Sales Manager.


24th July 2017: We are recruiting: Applications Engineer



Contact Us


Inductosense Ltd

SETsquared Business Acceleration Centre

Engine Shed, Station Approach

Bristol, BS1 6QH

United Kingdom

E-mail info@inductosense.com

Tel +44 (0) 117 915 1286