Clamping Force
Clamping Force - Related Videos
09:55
Force-Clamp Rheometry for Characterizing Protein-based Hydrogels
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Cited by 10 •
2018
A new force-clamp rheometry technique is used to investigate the mechanical properties of low-volume protein-based hydrogel samples tethered between a voice-coil motor and a force sensor. An analog proportional-integral-derivative (PID) system allows for the 'clamping' of the force experienced to the desired protocol.
09:43
Patch Clamp Electrophysiology
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2023
Neuron cell membranes are populated with ion channels that control the movement of charge into and out of the cell, thereby regulating neuron firing. One extremely useful technique for investigating the biophysical properties of these channels is called patch clamp recording. In this method, neuroscientists place a polished glass micropipette against a cell and apply suction to form a high resistance seal. This process isolates a small “patch” of membrane that contains one or more ion channels.
07:35
Hyperglycemic Clamp and Hypoglycemic Clamp in Conscious Mice
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Cited by 4 •
2024
A hyperglycemic clamp is used for measuring insulin release with a maintained higher blood glucose concentration. A hypoglycemic clamp is for measuring glucose production induced by counter-regulatory responses. Both methods use the same surgical procedure. Here, we present a clamp technique to assess systemic glucose metabolism.
09:38
Dissecting Mechanoenzymatic Properties of Processive Myosins with Ultrafast Force-Clamp Spectroscopy
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Cited by 1 •
2021
Presented here is a comprehensive protocol to perform ultrafast force-clamp experiments on processive myosin-5 motors, which could be easily extended to the study of other classes of processive motors. The protocol details all the necessary steps, from the setup of the experimental apparatus to sample preparation, data acquisition and analysis.
07:30
Ensemble Force Spectroscopy by Shear Forces
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Cited by 1 •
2022
Ensemble force spectroscopy (EFS) is a robust technique for mechanical unfolding and real-time sensing of an ensemble set of biomolecular structures in biophysical and biosensing fields.
FAQs
Preload presses the joined surfaces together and creates contact pressure across the interface. That pressure allows friction to oppose relative movement, while the joint’s stiffness contributes to its ability to remain aligned when external forces act. Engineers therefore control preload so the connection resists separation and shear without exceeding the strength of the components.
Friction helps resist sliding between contacting components, particularly when shear forces or vibration are present. Joint stiffness helps the assembly retain its alignment and respond predictably to external loads. Clamping force works with both properties rather than acting alone, so engineers consider the complete joint behavior when preventing slip, separation, or loss of stability.
Insufficient force may allow slipping, separation, leakage, or loss of alignment because the contact surfaces cannot resist applied loads reliably. Excessive force can deform or damage the components being held. Controlling the applied level is therefore a balance between maintaining adequate contact pressure and avoiding stresses that shorten component life or impair operation.
Several mechanisms can apply the required compression, including tightening a fastener, actuating a vise or fixture, and using hydraulic or pneumatic pressure. The choice depends on the engineering operation and the type of control required. Regardless of the mechanism, the applied force must produce stable contact without causing deformation or damage.
Engineers calculate the required force, apply it through an appropriate fastener, fixture, vise, hydraulic system, or pneumatic system, and control the result during the operation. They evaluate whether the contact pressure maintains alignment and resists expected loads while avoiding leakage, slipping, deformation, or component damage. This supports repeatable and safer outcomes.
Controlled clamping force is important in bolted joints, machining fixtures, and material testing, where stable alignment and resistance to applied loads affect the result. It also supports manufacturing processes such as injection molding. In these settings, consistent force improves repeatability, protects components, and helps maintain reliable process performance.