Acrolab is a thermal engineering company founded in 1948 that develops heatpipe technology products. One such product is the Isomandrel, a filament winding mandrel that uses internal heatpipes to maintain an isothermal temperature profile. The document shows that the Isomandrel provides more uniform heating compared to standard mandrels, with temperature variations of less than 3 degrees Celsius along the entire length as measured through thermal imaging. It also describes how the Isomandrel can be used for induction heating of composites during manufacturing processes.

1. The Isomandrel®
Advanced Research & Development
Acrolab - Isomandrel®
Thermally enhanced mandrels for
filament winding applications
Acrolab Copyright 2009 – Mandrel Modification

2. About Acrolab Ltd.
Advanced Research & Development
§ Founded in 1948
Thermal engineering & advanced energy transfer
Business Verticals:
§ Aerospace
§ Agricultural
§ Automotive/transportation
§ Defense
§ Electronics
§ Petrochemical
§ Medical
§ Material Science Global Headquarters &
§ Packaging Research Laboratories
§ Processing 7475 Tranby Avenue
§ Renewable energy sector Windsor Ontario Canada
Website: www.acrolab.com
§ Telecommunication
Acrolab Copyright 2009 – Mandrel Modification

3. Advanced Research & Development
What value does
heatpipe technology
bring to mandrel
design?
Acrolab Copyright 2009 – Mandrel Modification

4. Isobar® Heat Pipe
Advanced Research & Development
• Large amounts of energy can be rapidly transferred.
• Heatpipes are intrinsically Isothermal.
• Redistribution of localized energy inputs.
• Intuitive response to energy deficits and surpluses.
• Requires no direct power or physical connections.
• Sealed System.
Acrolab Copyright 2009 – Mandrel Modification

5. Isomandrel® : Based on Isobar® Technology
Advanced Research & Development
Acrolab Copyright 2009 – Mandrel Modification

6. Acrolab Isomandrel®
Advanced Research & Development
Acrolab Copyright 2009 – Mandrel Modification

7. Comparison 3” diameter mandrels
Advanced Research & Development
Hollow Standard
Mandrel
86.5 ° C
187.70 ºF
Isomandrel®
83.9 ° C
183.02 ºF
Click on both slides
Acrolab Copyright 2009 – Mandrel Modification

8. Acrolab Isomandrel®
Advanced Research & Development
Acrolab Copyright 2009 – Mandrel Modification

9. Acrolab Isomandrel® Advanced Research & Development
Acrolab Copyright 2009 – Mandrel Modification

10. Setting up for thermal recording Advanced Research & Development
Acrolab Copyright 2009 – Mandrel Modification

11. Temp 12” diameter Isomandrel®
Advanced Research & Development
275 °F
Acrolab Copyright 2009 – Mandrel Modification

12. One end image – CTO in thermal image Advanced Research & Development
275 °F
Acrolab Copyright 2009 – Mandrel Modification

13. Full length image 12”diameter mandrel
Advanced Research & Development
285 °F
Acrolab Copyright 2009 – Mandrel Modification

14. Isomandrel in induction heated
curing applications Advanced Research & Development
• The induction heating coil are situated proximate to
the mandrel permitting unimpeded mandrel rotation.
• Induction heating is relatively instantaneous and
intense.
• Significant thermal energy per unit time can be
provided.
• The Induction coil heats a small portion of the O.D.
of the mandrel and not the composite winding.
Acrolab Copyright 2009 – Mandrel Modification

15. Acrolab –
World Headquarters Windsor, ON, CANADA Advanced Research & Development
Thank you
Acrolab Copyright 2009 – Mandrel Modification