flexible strain sensor

A flexible strain sensor from Kingmach typically uses a resistive foil grid encapsulated in polyimide or silicone, giving it a tight bending radius and repeatable output. Thicknesses under 0.5 mm are common in the industry, allowing installation on complex geometries without stiffening the host structure. We pay close attention to the temperature compensation circuit, because thermal drift can easily distort long-term readings in the field. Many of our sensors go through thermal cycling during production to settle the materials before calibration. For field use, moisture ingress is the number one enemy. That's why we offer multiple sealing options—from simple silicone overcoats for indoor applications to fully welded, waterproof housings for buried or submerged installations. Cable strain relief is another detail that often gets overlooked. A flexible sensor is only as reliable as its lead wire attachment. Our connections are reinforced with strain relief boots, and we can provide armored cable assemblies on request. These sensors have been used in monitoring tunnel convergence, bridge bearings, and soil-structure interfaces. Because they can be manufactured in custom shapes and lengths, you're not locked into a catalog size. If you need a 2-meter-long sensor strip for a distributed strain profile, we can make it. The data output is straightforward—just connect to any strain readout box that supports quarter-, half-, or full-bridge configurations. Kingmach also supplies dataloggers if you need a turnkey solution. The goal is to give you a sensor that disappears into the structure, quietly delivering data without false alarms or drift issues.