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5N.m/500N金属接骨螺钉自攻力扭矩试验系统,测量具有自攻性能的金属接骨螺钉旋入标准材料时所需轴向自攻压力荷载值。测量旋入扭矩荷载和轴向位移变量值。测量接骨螺钉轴向拔出力、旋入旋出旋动扭矩、轴向插入力。 →自攻螺钉测试范围:HA/HB/HC/HD1.5-8.0mm;标称直径1.5-3.5-8.0mm。 →轴向压力荷载传感器0~500N,精度0.5%FS,分辨力0.01N; →旋转扭矩荷载传感器0~5N.m,精度0.5%FS,分辨力0.001N.m; →试验速度:旋转扭矩力以30r/min恒定速率施加,轴向压缩荷载以2N/s恒定速率递增。 →自攻力最大预载荷1.0N,以保证螺钉和工装紧密契合。 →旋入旋出旋动扭矩按照3r/min速度施加扭矩于螺钉头部,旋转4圈的扭矩值为最大旋入扭矩。反向旋转4圈螺钉测量旋出最大扭矩。旋入和旋出试验过程中施加不大于11.7N轴向载荷。 →HRJ-Test自攻力扭矩试验测控软件(多通道多功能易操控),采集频率1000Hz,实时记录处理分析轴向压力、扭矩、轴向位移。同时记录两个Y轴数据(Y轴1为力和扭矩,Y轴2为位移)随时间的变化。 →试验块夹具,精密制作,确保试验块中预钻的导向孔和试验样品共线。高刚度性保障试验加载条件下不会产生偏转和变形,在夹持或试验中不会使试验块产生变形。方形试验块由均匀材料制造,符合ASTM F1839要求。试验块上下表面平整光滑相互平行(偏差<±0.4mm),试验块厚度≥25mm。 →试验块中导向孔,旋入和旋出试验钳试验块中预钻导向孔,导向孔垂直于试验块表面钻取,碎屑清理干净。多个导向孔的试验块各孔间距至少为螺钉直径的5倍,各孔距试验块边缘足够远以保证试验时不会导致试验块边缘变形。导向孔、接骨螺钉、螺钉驱动工装在同一轴线上。 →试验数据获得及判断:一次有效的试验从自攻开始后完整旋转5圈,将自攻开始后获得的最大轴向力作为自攻力记录。有时在初始的5圈旋转过程中,接骨螺钉将出现自攻后停止进入试验块(停止或试验块内螺纹破坏),计算机软件显示扭矩阻力的急速降低和轴向位移的保持不变(平线)。当接骨螺钉停止时,轴向力重新以2.0N/s±1.0N/s速率增加重新获得自攻:(1)第2次出现的最大轴向力作为自攻力记录;(2)在第2次自攻开始后试验样品需完成5圈旋转;(3)报告中备注试验样品停止或试验块内螺纹破坏。超过一次以上停止的试验样品视为无效。 →ASTM F543-23;ASTM F67;ASTM F136;ASTM F1295;ASTM F1472;ASTM F2502;ASTM F116;ASTM E122; Standard Specification and Test Methods for Metallic Medical Bone Screws;Implant for surgery-Test method for determining the self-tapping performance of metallic bone screws;Implants for surgery-Test method for determining the axial pullout strength of metallic bone screws;Implants for surgery-Test method for driving torque of metallic bone screws;Wrought titanium and titanium alloy dental implant;Spinal implants-Components used in the surgical fixation of the spinal skeletal system-Part 2:Metallic spinal screws;Metal bone screws with asymmetrical thread and spherical under surface Mechanical requirements and test methods;Implants for surgery Intramedullary nailing systems;HRJ Tester;Intramedullary nails with cloverleaf or V-shaped cross-section;Spinal implants-Components used in the surgical fixation of the spinal skeletal system;General requirements;Standard specification and test methods for bioabsorbable plates and screws for internal fixation implants;Implants for osteosynthesis Metallic fixation screw for femur neck;HRJ Tester;Implants for osteosynthesis Standard test method for measuring fretting corrosion of osteosynthesis plates and screws;Dentistry-Artificial teeth for dental prostheses;Implants for surgery Acrylic resin cements;Dentistry-Corrosion test methods for metallic materials;Medical Engineering Medical Device Product Biological Materials Mechanical Testing System;Stemmed Femoral Components Endurance Properties Tester;Intervertebral Body Fusion Device Biomechanics Tester;Metallic Bone Plates Bending Fatigue Properties Tester;Orthopaedic Research Applications Miniature Biomechanics Tester;Tendon Ligament Shoulder Knee Joint Medical Testing Machine;Artificial Joint Material Biomechanical Properties Tester;Computer Bone Screws Torque Tester;Metallic Bone Plates Mechanics Properties Testing Machine;Orthopaedics Testing Machine;Dentistry Implants Mechanical Testing Machine;Medical Device Products Fatigue Life Testing System;Implants for Surgery Cyclic Fatigue Testing Machine;HRJ Tester;Medical Screwdrivers Torque Fatigue Tester;Medical Rubber Plastics Film Products Tensile Tester;Medical Hydrogel Tensile Tester;Tension Torsion Testing Machine;Total Hip-Joint Total Knee-Joint Prostheses Wear Testing Machines;Knife Fork Tensile Torsion Testing Machine;Orthopedic Implants Compression Torsion Fatigue Test System;Biological Materials Compression Molding Strength Tester;Granular Materials Compression Molding Strength Tester;
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