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Car-body coating Contactless inspection system

Irysin partnership with:

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Background

das-Nano’s proposed system for car bodywork coating inspection

Irys, Terahertz-based paint thickness inspector

• In general, the application of coatings on all types of materials has had two basic objectives:

to protect or add new qualities to the coated base material.

• These characteristics can only be guaranteed with the appropriate thicknesses.

• Since the beginning of the 20th century, various technologies have been implemented to measure the thickness of these layers.

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Some techniques for thickness inspection already in use

in the Automotive industry:

Magnetic Induction

Non-magnetic coating

+

Magnetic (ferrous) metallic substrate

Eddy current (Foucault current)

Non-conducting coating

+

Non-magnetic (non-ferrous)

metallic substrates

Ultrasonic

Non-conducting coating

+

Non-metallic substrate

Coating thickness inspection

Current techniques in the market and problems to solve

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Why Irys?

× Not reliable feedback

× Calibration often required

× Slow measurement

× Unable to identify the various constituent layers

× Only measure the total thickness of all layers

Any solution to all these problems? YES

das-Nano’s Irys system

Problems of current inspection systems

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Why Irys?

✓ Full Layer thickness map

✓ Vibration compensation

✓ Any substrate

• Metal: Steel, aluminium

• Plastics

• Composite- CFRP/GFRP

✓ Fast for production (up to 12 points/min)

✓ Reliable – Best-in-Class emitter

✓ Thickness Resolution ~ 1 µm

✓ Same tool for any layer

✓ No need for recalibration stops

(demo video)

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Factory improvements

No need for cost extensive Calibrations

Full Knowledge for ROBUST process

Real Time feedback to painting process for every layer

Thickness optimization Material Savings: Specially CC layer

Reduction of Reworks Material and Manpower Savings

Reduction of the environmental impact

Ready for NEW substratesCarbon fiber, glass fiber, plastics…

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Comparison with current systems

IRYSOther techniques

× Not reliable feedback

× Calibration often required

× Slow measurement

× One system for each type of substrate

× Only one-layer inspection

✓ Reliable Best-in-class emitter & Vibration compensation system

✓ No need for recalibration stops

✓ Fast measurement (Up to 12 points/minute)

✓ Same tool for any substrate (metal, plastics, composite…)

✓ Full layer thickness map - Each layer with ~ 1µm resolution

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Laboratory

Portable

Automated

Supply unit THz header Positioning system

6 years of co-development with Fraunhofer Institute

THz

syst

em

What elements compose das-Nano’s THz systems?

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Irys User interface

✓ User friendly graphical interface developed by das-Nano

✓ 2D & 3D maps

✓ Measurement data, Statistics and Trends collection

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Flat sample inspectiondas-Nano lab

Real car parts inspectiondas-Nano lab

ProductionCustomer facilities

PROGRESS

Procedure to implement das-Nano’s Terahertz system

from lab to production

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das-Nano THz technology has been chosen after an international tender by the first worldwide manufacturer Volkswagen (headquarter Wolfsburg) for

the first real installation of paint thickness inspection system at Volkswagen Navarra premises.

Awarded Tender in December 2019 | IRYS in operation in July 2020

Successful customer use case:

Irys at Volkswagen Factory

VW Wolfsburg VW Navarra

Authorized picture: VW Navarra

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Conclusions

das-Nano THz technology is ...

… non-ionizing.

… contactless and non-destructive.

… ready for non-qualified operators.

… high performance industrial-grade, used worldwide.

das-Nano THz technology provides …

… measurements of non-flat surfaces over metallic and non-metallic substrates.

… no sample preparation tool.

… quick quality control.

… single side measurements.

… thickness map of each layer of the inspected area.

… 100% area inspection.

… very user-friendly interface.

… laboratory, portable or automated systems.

NDT

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Contact

Founded in 2012Based in Navarre (Spain)

Experienced business and industry entrepreneursMore than 100-people team40% of our team holding PhDs

One of our core technologies and expertise is Terahertz wave technology

das-Nano develops state-of-the-art solutions for the industry:

AutomotiveAerospace and WindpowerResearch & Science

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• Good spatial resolution (sub-mm)

• Good penetration (~cm)

• Time-domain (depth information)

Why Terahertz waves?

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THz-TDS: Principle of operation

The emitted THz pulse interacts with the various layers of the material

The reflected THz signal is detected

In-house developed algorithms analyse the detected signal

Extraction of the parameters

Terahertz TIME DOMAIN SPECTROSCOPY (TDS)

Principle of operation

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THz thicknesses are trustworthy?

1. Areas measured with THz-system 2. Cut the samples following the areas measured by THz-system

THz thickness

3. Sand the sub-samples following metallography protocol

Microscope thickness

4. Measuring the profile taking 20 microscopy images.

5. Comparison of THz and microscope thicknesses

Good agreement between Gold standard Microscope and das-Nano THz thicknesses

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Contact

Polígono Industrial Talluntxe II, Calle M-10

31192 - Tajonar, Navarra, Spain

+34 948 246 295

www.das-nano.com

info@das-nano.com