Can composite tubes cure aching elbows?

Most of us wander through life and accept that things don’t always work the way we want them to. Others just don’t accept those failures. They make the world a bit better for the rest of us. One such person is Dr. Gunnar Winroth in Skellefteå, northern Sweden. All his life, he has improved and…

Beyond the glass transition temperature…

In May, we presented Engineering Doctorate Julian Merino Perez’s work on Taylor curves here in the blog. We recently asked for an update on his findings from the Advanced Manufacturing Research Centre (AMRC) at the University of Sheffield. How does short exposure to high temperatures affect the bore hole? When machining carbon-fiber-reinforced polymer (CFRP) composites, especially when…

Glossary update

We have updated our glossary with a few new words. Thanks for your ideas on areas to cover! Automated drilling unit (ADU): A drilling unit which is positioned by hand, but where the feed rate and rotational speed is automatically controlled, and fixed throughout the drilling process. Common in the aerospace industry, and most often…

Learning by doing, or through strong networks

Composite machining is a relatively new area for many companies. To learn more about where our readers turn for knowledge in this area, we published a poll in December. Thanks for your answers. It’s of course satisfying to see that 38 percent of respondents turn to this blog for help. We really aim at being…

Chip control in metallic stack & composite machining

A common challenge that my customers face when machining composite materials in stacks with metallics (especially aluminium alloys) is chip breaking. If it is not taken care of, poor chip breaking will affect the result in the following ways: High workpiece temperature Chips that are not evacuated from a drilled hole will contribute to increased heat…

Happy holidays everyone! Looking forward to a great new year in composite machining!

 

3D-printing: Opportunity or threat?

3D-printing is increasingly used to manufacture components such as hip implants. In this case it is the possibility to produce a surface texture that stimulate bone in-growth and thereby speeds up the healing process. – Image from Arcam AB® 3D-printing, or additive manufacturing, is not a new phenomenon. Chuck Hull, the father of 3D-printing, actually…

Video: XCT’s navigation map for optimum composite cutting

Lief Dahl and Emil Espes, R&D Engineers, Sandvik, co-wrote this this analysis and supplied all video. XCT (X-ray computed tomography) is a non-destructive technique that has been proven an excellent aid in analyzing and explaining hole surface quality. And since it is “see through,” and consequently reveals any hard grains and degree of cavities in the Carbon…

Weighing in again on Lightweighting…

Composites have long been in automotive body panels and chassis. But thanks to resin transfer molding, auto makers are targeting composites for suspension parts and wheels. The European Union agreed to enforce stricter rules on carbon dioxide emissions for EU cars a week ago and the regulations in China are getting tougher. The Obama CAFE…

Lightweighting cars with heavier electric batteries

The number of cars on the streets all over the world is steadily increasing. Tighter environmental demands forces the industry to develop lighter cars that are less dependent on gasoline. Carbon fiber-based composite materials are expected to play a key role in this development. The interest for hybrid and electric cars is growing, but the…