Interferrometric shearography at OTR tyres

1. SDS Systemtechnik www.sds-systemtechnik.de
by SDS - Systemtechnik - GmbH
Shearography
OTR solutions
Jan. 2013

2. © 2020, SDS Systemtechnik, Calw, Germany ITT - OTR
- Tire Repair (before and after)
- Industrial Retreading Industry (initial and final inspection)
- New Tire Production (quality management)
Application:

3. © 2020, SDS Systemtechnik, Calw, Germany ITT - OTR
TBR- and OTR tire
What is the difference?
- dimensions, weight, thickness of the material
- number of belts
- Cost of the new product
- The level of repairs and repairing done
and involved cost when the tire fails
and more!

4. © 2020, SDS Systemtechnik, Calw, Germany ITT - OTR
What is the difference for an Interferometric Tire Tester
Adapted machine concept
loading system with robust loading arm
and segmented belt conveyor
more laser diodes with
adapted field of view
but no change in the measuring
principal
to tire weight
to tire dimensions

5. © 2020, SDS Systemtechnik, Calw, Germany ITT - OTR
What is the difference for Interferometric Tire Tester
Due to dimensions, weight, thickness of the material, number of belts
Different machine concept
over 2.4m outside diameter
= separated measuring system
and chamber for machines
= shuttle system for tire handling outside the chamber
for external loading with forklift or over head crane
= shuttle system with automatic tire centering
independent from tire position on shuttle

6. © 2020, SDS Systemtechnik, Calw, Germany ITT - OTR
Due to cost of the new product and involved cost when tire fails
testing makes even more sense for new OTR tire manufacturing
= 100% tire integrity for 100% price
or downgrade new tires
or repair new tires in areas defined
with ITT (plus Ultra Sonic)

7. © 2020, SDS Systemtechnik, Calw, Germany ITT - OTR
Due to cost of the new product and involved cost when tire fails
= helps to optimize the building and curing process
to increase capacity
to minimize anomalies
trapped air
along a splice
trapped air
in tread area
Curing anomaly
in one segment
testing makes even more sense for new OTR tire manufacturing

8. © 2020, SDS Systemtechnik, Calw, Germany ITT - OTR
Due to cost of the new product and involved cost when tire fails
testing before retreading makes even more sense with OTR tires
What is the value of these used tires ?
 if a tire can not be retreaded,
this tire can still be used “till the absolute limit”

9. © 2020, SDS Systemtechnik, Calw, Germany ITT - OTR
Due to the level of repairs with OTR tires
1. Question before a repair is started:
- testing with an ITT improve capabilities
Will it make sense to repair this tire ?

10. © 2020, SDS Systemtechnik, Calw, Germany ITT - OTR
Testing with an ITT improve repair capabilities
 “Invisible” findings can be located
= the scope of work is more clear
= irreparable defects are obvious
before the work is started

11. © 2020, SDS Systemtechnik, Calw, Germany ITT - OTR
 The position of the skiving area is defined
Testing with an ITT improve repair capabilities
Searching ! Wrong marking !
with test results
position is defined

12. © 2020, SDS Systemtechnik, Calw, Germany ITT - OTR
 The size of skiving area is defined
Testing with an ITT improve repair capabilities

13. © 2020, SDS Systemtechnik, Calw, Germany ITT - OTR
 The repaired area or repair patch can be verified for separation
Testing with an ITT improve repair capabilities

14. © 2020, SDS Systemtechnik, Calw, Germany ITT - OTR
But Interferometric Tire Testing can NOT
eliminate a visual inspection!!
 These indications are open to atmosphere
The vacuum can not cause a deformation !
 The ITT will show no anomaly !!

15. © 2020, SDS Systemtechnik, Calw, Germany ITT - OTR
Tire Test Systems for OTR
- ITT 2100 / 2400
- OTR 3800 / 4500

16. © 2020, SDS Systemtechnik, Calw, Germany ITT - OTR
 ITT 2100 / 2400
with integrated loading/unloading unit
automatic tire positioning
compact and space saving solution
second door
and double head option
to reduce the cycle time
for tires from 12” bead diameter
to 2100mm OD / 750mm width
to 2400mm OD / 800mm width

17. © 2020, SDS Systemtechnik, Calw, Germany ITT - OTR
 ITT-OTR 3800/4500
individual shuttle solutions
automatic tire centering
second door option for inline production
- from 14” bead diameter to
- 4500mm outside-Ø
- 1800mm width and
- up to max. weight of 7t

18. © 2020, SDS Systemtechnik, Calw, Germany ITT - OTR
 ITT-OTR Shuttle solutions
Basic setup with 1 conveyor module
- Loading shuttle with
module belt conveyor
for automatic tire centring
and loading
onto the internal conveyor
in the test chamber and back

19. © 2020, SDS Systemtechnik, Calw, Germany ITT - OTR
 ITT-OTR Shuttle solutions
Pass through loading system with
2 conveyors
- Loading shuttle with
module belt conveyor
for automatic tire centring
and loading
- Second door on unloading side
- unloading table with
module belt conveyor

20. © 2020, SDS Systemtechnik, Calw, Germany ITT - OTR
 ITT-OTR Shuttle solutions
2 Position loading system
- 2 separate loading shuttle
with module belt conveyor
for automatic tire centring
and loading
- Center position of chamber
- Individual loading options for
- loading one side
unloading opposite
- Loading/unloading one side
flipping (forklift) opposite
- mixed

21. © 2020, SDS Systemtechnik, Calw, Germany ITT - OTR
Tire Test Systems

22. © 2020, SDS Systemtechnik, Calw, Germany ITT - OTR
1978, IHI also designed the first Tire Tester for OTR tires up to 3.7 m OD
IHI K1130
(Photo: Industrial Holographics, Inc. 1981)
IHI K1130 with two interferometers
(Photo: Industrial Holographics Inc. 12/1/1978)

23. © 2020, SDS Systemtechnik, Calw, Germany ITT - OTR
Michelin Truck- and OTR tire manufacturing Canada, 2001
ITT-2 for max. diameter 1800mm

24. © 2020, SDS Systemtechnik, Calw, Germany ITT - OTR
Pingshuo Coal – China: OTR 4500 with two shuttle solution

25. © 2020, SDS Systemtechnik, Calw, Germany ITT - OTR
ITT – OTR 4500
with two doors and
Inline shuttle

26. © 2020, SDS Systemtechnik, Calw, Germany ITT - OTR
SDS Product Range
- Interferometric Tire Tester
in the Production, R&D, Test Labs, Racetrack, ….
for new tire production and retreading of all type of tires
- Laser Marking Systems
in the truck tire retreading and Automotive Manufacturer (Testing)
Handheld-Systems for OTR and Agriculture Tire Industry
Semi-automated Systems for OEM applications
Fully automated systems for TBR, PCR and aerospace tyres
- 2-D Measuring Systems and Colour Detection
Profile Measurement offline and inline for thickness, width, variation, symmetry,
comparison of nominal and real profile in extrusion and calender applications
Inline Tread Length Measurement systems, Splice verification, ..
Colour Line Detection inline and offline Layer Check System
- 3-D Contouring Systems
PTS - pressure test system for casing inspection in the Retread Industry
EMS - monitoring system for durability test, high speed test, ….
CMS - automatic wear measurement of Aircraft Tire

27. SDS Systemtechnik www.sds-systemtechnik.de
SDS -Systemtechnik- GmbH
75365 Calw-Stammheim, Rudolf Diesel Straße 7
Germany
Tel.: +49 -7051 - 93154 - 0
Fax.: +49 -7051 - 93154 - 99
email: info@sds-systemtechnik.de
the END