Development of a method and technology for the production of 3D knitted reinforcement grids

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Materials used, basic textile machinery and restrictions

position	0°	90°
manufacturer	Teijin Carbon Europe GmbH, Wuppertal (Germany)
material	Carbonfilament yarn
linear densitiy in tex	800 – 3200
thread distance in mm	30	35
development aim	Modular retrofit on an existing multiaxial warp knitting machine (Karl Mayer Malimo 14024, working width 50″)

Deformation of the carbon roving

	height in mm	width in mm
carbon roving laid	0.2	15.0
carbon roving shaped	5.1	2.4

Comparison of speeds theoretically determined and measured using a representative measurement point to identify TARGET/ACTUAL deviations as a function of the engine speed

Point	Engine speed in m−1	Velocity (measured) in mm/s	Velocity (theoretically) in mm/s	Deviation in mm/s	Percentage of deviation
1	24	collision	637.60	-	-
	12	244.90	215.41	29.49	12.04
	6	122.20	107,70	14.50	11.87
2	24	collision	65.43	-	-
	12	23.99	22.10	1.89	7.88
	6	11.34	11.05	0.29	2.56
3	24	collision	26.67	-	-
	12	9.25	9.01	0.24	2.59
	6	4.60	4.51	0.09	1.96