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Investigating Failed Components using Industrial CT Scanning

Investigating Failed Components using Industrial CT Scanning

FAILURE INVESTIGATION OF HUMAN SUPPORT SYSTEM (CHAIR)

Have you fallen and can’t get up?

Are you struggling to return something to Amazon?

Are you tired of finding 3500mm cubed voids in your products?

Do you wonder why everything is more expensive but doesn’t last as long?

Us too.

This case study explores the failure of a human support system (chair.)

Industrial CT Scanning is a powerful non-destructive imaging technique used to inspect the internal structure of objects. When applied to plastics to detect porosity, CT scanning provides detailed cross-sectional and 3D rendered images revealing the distribution, size, and shape of voids or pores within the material.
 
Everyone from manufacturers to law firms have used our services to assist with their fact finding, point of origin, or root cause evaluations.
Chair Pic

We combine many hardware and software capabilities for the best possible evaluation of products. Because of the size of the chair we used a high accuracy laser scanner (Hexagon Absolute AS1) to capture the overall geometry of a still intact chair. We then created a coordinate system and aligned additional scans of the broken pieces in PolyWorks.

3D Scan and CT Scan Alignment
Rendered 3D Porosity of Cracked Chair

Once everything was aligned properly we imported the .STL mesh files into Volume Graphics to begin aligning the individual CT scans. The CT scans were acquired using our Nikon Microfocus X-Ray & CT cabinet. After the alignments were complete we extracted the volumetric porosity to find voids and cavitation as large as 3500mm3 and found a significant concentration at the base of the chair. 

Aligned CT Scans Porosity Evaluation
Porosity CT Scan 1
3D Rendered Foot Porosity
Porosity CT Scan 2