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Tire designers are challenged to develop new tread patterns and compounds that deliver longer tread life and more uniform tread wear. Starrett-Bytewise partnered with Ford Motor Company and several leading OEM tire makers to develop CTWIST as a way to measure and characterize tread wear so the designers could better understand wear behavior. With the CTWIST process, new tires are scanned after break-in, then periodically scanned during the wear cycles. CTWIST predicts the tread life for each rib, and produces several tread wear reports to help the designer understand where improvements are needed.
CTWIST utilizes a non-contacting high-speed laser sensor to collect about 1,000,000 measuring points in less than 5 minutes.
FEATURES
• Tread Depth Profile Report shows the tread depth profile for each wear cycle
• Heel/Toe Wear Report shows the heel-toe wear profile across the tread
• Irregular Wear Report shows a 3D color map of the tread loss
• Tread Loss Report shows the tread loss profile across the tread
• Tread Life Mileage Projection shows the predicted tread life of each rib
System Specifications Typical Measurement Time Measurement Technology Measurement Range Laser Standoff
5 minutes
Scanned Laser Triangulation 32mm
180mm
Measurement Spot Diameter 0.1mm Laser Classification Laser Resolution Data Signal
Data Points per Scan Line Senor Frequency Encoder
Typical Data File Size
Maximum Tire and Wheel Assembly Weight
Machine Dimensions (W x D x H)
Class lllb Gallium Arsenide < 0.008mm
Digital with Invalid Data Signal 4096 16kHz
= 16,000 PPR 1Mb
Compatible Tire Radius Range 200 to 625mm Compatible Tire Widths
Up to 400mm 100kg
Maximum Tire Rotation Speed 120RPM 1000mm x 1150mm x 900mm
Check out our website for interactive features at starrett.com