|
|
 |
| |
首頁 >> 新聞中心 >> 5N.m500N金屬接骨螺釘自攻力扭矩試驗系統Metallic Bone Screws Self-tapping Force Torque Test System
5N.m/500N金屬接骨螺釘自攻力扭矩試驗系統，測量具有自攻性能的金屬接骨螺釘旋入標准材料時所需軸向自攻壓力荷載值。測量旋入扭矩荷載和軸向位移變量值。測量接骨螺釘軸向拔出力、旋入旋出旋動扭矩、軸向插入力。
→自攻螺釘測試範圍：HA/HB/HC/HD1.5-8.0mm；標稱直徑1.5-3.5-8.0mm。
→軸向壓力荷載傳感器0～500N，精度0.5%FS，分辨力0.01N；
→旋轉扭矩荷載傳感器0～5N.m，精度0.5%FS，分辨力0.001N.m；
→試驗速度：旋轉扭矩力以30r/min恒定速率施加，軸向壓縮荷載以2N/s恒定速率遞增。
→自攻力最大預載荷1.0N，以保證螺釘和工裝緊密契合。
→旋入旋出旋動扭矩按照3r/min速度施加扭矩于螺釘頭部，旋轉4圈的扭矩值爲最大旋入扭矩。反向旋轉4圈螺釘測量旋出最大扭矩。旋入和旋出試驗過程中施加不大于11.7N軸向載荷。
→HRJ-Test自攻力扭矩試驗測控軟件（多通道多功能易操控），采集頻率1000Hz，實時記錄處理分析軸向壓力、扭矩、軸向位移。同時記錄兩個Y軸數據（Y軸1爲力和扭矩，Y軸2爲位移）隨時間的變化。
→試驗塊夾具，精密制作，確保試驗塊中預鑽的導向孔和試驗樣品共線。高剛度性保障試驗加載條件下不會産生偏轉和變形，在夾持或試驗中不會使試驗塊産生變形。方形試驗塊由均勻材料制造，符合ASTM F1839要求。試驗塊上下表面平整光滑相互平行(偏差＜±0.4mm），試驗塊厚度≥25mm。
→試驗塊中導向孔，旋入和旋出試驗鉗試驗塊中預鑽導向孔，導向孔垂直于試驗塊表面鑽取，碎屑清理幹淨。多個導向孔的試驗塊各孔間距至少爲螺釘直徑的5倍，各孔距試驗塊邊緣足夠遠以保證試驗時不會導致試驗塊邊緣變形。導向孔、接骨螺釘、螺釘驅動工裝在同一軸線上。
→試驗數據獲得及判斷：一次有效的試驗從自攻開始後完整旋轉5圈，將自攻開始後獲得的最大軸向力作爲自攻力記錄。有時在初始的5圈旋轉過程中，接骨螺釘將出現自攻後停止進入試驗塊（停止或試驗塊內螺紋破壞），計算機軟件顯示扭矩阻力的急速降低和軸向位移的保持不變（平線）。當接骨螺釘停止時，軸向力重新以2.0N/s±1.0N/s速率增加重新獲得自攻：（1）第2次出現的最大軸向力作爲自攻力記錄；（2）在第2次自攻開始後試驗樣品需完成5圈旋轉；（3）報告中備注試驗樣品停止或試驗塊內螺紋破壞。超過一次以上停止的試驗樣品視爲無效。
→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；
|
|
|
| |
