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Description
The DN 44 Dry & Lubricated Reciprocating Sliding & Fretting Machine incorporates a servo hydraulic actuator driven by a high frequency analogue controller, which derives its set points via a 16 bit control and data acquisition card from a standard PC running COMPEND 2000 software. Real time adaptive control features provided within the software allows high precision control of the actuator when working against highly non-linear loads. Sine, square, triangular and random waveforms may be programmed and, depending on the physical capabilities of the hydraulic system, oscillating frequencies up to 200 Hz may be controlled.
The machine is designed for fretting and fretting fatigue tests with nominal relative movement between contacting surfaces in the range 20 microns to 80 microns. It may also be used for sliding reciprocating tests at strokes up to 20 mm. Servo hydraulic actuation with piezo transducer friction force measurement and servo controlled loading with force transducer feedback.
DN 44/1 Small Perturbation Signal Generator
This optional additional signal generator and signal analysis system allows combined sliding motion with co-axial vibration to be generated. The standard servo amplifier incorporates a summing junction on the input stage with dual inputs. This means that with the addition of a second signal generator, two separate signal inputs, one low frequency and long stroke and one high frequency and short stroke, can be combined, thus producing reciprocating motion with superimposed vibration from a single servo hydraulic actuator.
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Technical Specifications
Type of contact: Ball/Flat Flat/Flat Line/Flat Type of Movement: Sine, Square, Triangular and Random Load: 5 to 1,000 N Friction Force: +/-500 N Maximum Stroke – continuously variable: 10 microns to 20 mm Frequency: 0.1 Hz to 200 Hz Environment: Dry or Lubricated Temperature: Ambient to 600°C Super High Response Servo Valve: 12 l/min Actuator Bearings: Hydrostatic Dynamic Load: 5.7 kN Static Load: 8.6 kN Hydraulic Power Pack: 12 l/min at 250 bar High Speed Interface: USB ADC Resolution: 16 bit Number of Input Channels: 1 to 6 Maximum Data Rate: All channels up to 50 kHz Interface: Serial Link Interface Module Software: COMPEND 2000 DN 44/1 Small Perturbation Signal Generator Type of Movement: Sinusoidal sliding stroke with co-linear superimposed sinusoidal perturbation Sliding Motion: Maximum Stroke: 20 mm (Amplitude: 10 mm) Type of Movement: Sinusoidal Frequency (FS): 0 to 5 Hz Vibration Motion: Stroke/Frequency: 200 microns (Amplitude 100 microns) @ 0 to 200 Hz 100 microns (Amplitude 50 microns) @ 0 to 300 Hz Frequency (FP): 0 – 300 Hz Control Requirements: FP must be greater than FS x 20 Controlled Parameters Frequency Stroke Load Temperature Test Duration Measured Parameters Frequency Stroke Load Friction Temperature Electrical Contact Resistance Services Electricity: 380/415V, three phase + neutral, 50 Hz, 7.5 kW 380/415 V, three phase + neutral, 60 Hz, 7.5 kW Mains water and drain: 10 l/min (typical) -
Publications
Paper # 374 An Investigation on Fretting Wear Life of Bonded MoS2 Solid Lubricant Coatings in Complex Conditions Xu J, Zhu M H, Zhou Z R, Kapsa P, Vincent L Wear 255 (2003) 253 – 258 Paper # 385 On the Friction and Wear Behaviour of Human Tooth Enamel and Dentin Zheng J, Zhou Z R, Zhang J, Li H, Yu H Y, Wear 255 (2003) 967 – 974 Paper # 453 Effect of surface treatment by ceramic conversion on the fretting behavior of NiTi shape memory alloy H Yang, L Qian, Z Zhou, X Ju, H Dong Tribology Letters Volume 25, Number 3 / March, 2007 p. 215-224 Paper # 461 Fretting wear behavior of n-ZrO 2/Ni composite coating prepared by brush electroplating. B Jiang, BS Xu, SY Dong, ZW Ou Mocaxue Xuebao (Tribology). Vol. 25, no. 6, pp. 515-519. Nov.-Dec. 2005 Paper # 493 Microstructure and fretting wear behavior of Ni based composite coatings reinforced by SiO(2) nanoparticles HM Wang, B Jiang, BS Xu, SN Ma, SY Dong Mocaxue Xuebao (Tribology). Vol. 25, no. 4, pp. 289-293. July-Aug. 2005 Paper # 541 The role of phase transition in the fretting behavior of NiTi shape memory alloy L Qian, Z Zhou, Q Sun Wear 259 (2005) Page 309–318 Paper # 634 A practical methodology to select fretting palliatives: Application to shot peening, hard chromium and WC-Co coatings K Kubiak, S Fouvry, AM Marechal Wear Volume 259, Issues 1-6, July-August 2005, p. 367-376 Paper # 637 Effect of ceramic conversion treatments on the surface damage and nickel ion release of NiTi alloys under fretting corrosion conditions H Dong, X Ju , H Yang, L Qian and Z Zhou Journal of Materials Science: Materials in Medicine Issue Volume 19, Number 2 / February, 2008 p. 937-946 Paper # 638 The role of martensite reorientation in the fretting behaviour of nickel titanium shape memory alloy Qian L, Sun Q, Zhou Z Proceedings of the I MECH E Part J Journal of Engineering Tribology, Volume 222, Number 7, 2008 , pp. 887-897 Paper # 639 Fretting wear behavior of conventional and nanostructured Al2O3–13 wt%TiO2 coatings fabricated by plasma spray W Tian, Y Wang and Y Yang Wear Volume 265, Issues 11-12, 26 November 2008, p. 1700-1707 Paper # 780 Relationships between the fretting wear behavior and the ball cratering resistance of solid lubricant coatings DB Luo, V Fridrici Surface and Coatings Technology 2010 Volume 204, Issue 8, p. 1259-1269 Paper # 784 Selecting solid lubricant coatings under fretting conditions DB Luo, V Fridrici Wear 2010 Volume 268, Issues 5-6, p. 816-827 Paper # 788 Surface property enhancement of Ni-free medical grade austenitic stainless steel by low-temperature plasma carburising J Buhagiar, L Qian Surface and Coatings Technology 2010 Volume 205, Issue 2, p. 388-395 Paper # 823 Effect of low-temperature plasma carbonitriding on the fretting behaviour of 316LVM medical grade austenitic stainless steels J Liu, H Dong, J Buhagiar, CF Song, BJ Yu Wear Volume 271, Issues 9-10, 29 July 2011, Pages 1490-1496 Paper # 880 Study on the Fretting Wear Behavior and Mechanism of Nuclear Alloy 690 Tube JN Mei, F Xue, ZX Wang, GD Zhang Advanced Materials Research (Volumes 512 – 515) Pages 1740-1746 Paper # 907 Friction and Wear Behavior of Human Teeth ZR Zhou, HY Yu, J Zheng, LM Qian, Y Yan Dental Biotribology 2013, pp 43-73 Paper # 908 Effect of the Oral Environment on the Tribological Behavior of Human Teeth ZR Zhou, HY Yu, J Zheng, LM Qian, Y Yan Dental Biotribology 2013, pp 75-115 Paper # 1116 Experimental Study of the Fretting Wear Behavior of Incoloy 800 Alloy at High Temperature XY Zhang, JH Liu, ZB Cai, JF Peng, MH Zhu Tribology Transactions – Volume 60, 2017 – Issue 6 -
Applications
ball on plate ceramics fretting fretting wear reciprocating sliding sliding line contact -
User List
Launched 2000
Chengdu University China Nuclear Research Center – Negev Israel -
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