Provided is a deformation tester where a specimen is deformed and can be observed and analyzed in any deformation state without removal. The tester includes: a detachable part repeating a relative displacement cycle, two portions of the specimen attached to a first and a second attachment portion of a first and a second part member, the specimen deformed from a first to a second shape state and back to the first shape state during the cycle; and a main body part that the detachable part is detachably attached to; wherein a state retaining part for fixing a relative position of the second to the first part member in at least one shape state is freely attachable to the detachable part mounted on the main body part and the detachable part with the state retaining part is freely attachable to the main body part.

In one implementation, a footfall detection assembly comprising a sensor underlayment unit and a data analysis device is provided. The sensor underlayment unit comprises a sensor having a unique sensor identifier and a plurality of zones, wherein the sensor is configured to measure zone capacitance in of the plurality of zones, and a processing unit operably connected to the sensor. The processing unit is configured to receive the measured zone capacitance values from the sensor upon the occurrence of a change in measured zone capacitance of the sensor and generate and transmit a data packet comprising at least the unique sensor identifier and measured zone capacitance values upon occurrence of a change in capacitance of at least one of the plurality of zones of the sensor. The data analysis device is configured to receive the data packet, compare the measured zone capacitance values of the data packet to previously-measured zone capacitance values associated with the sensor underlayment into and generate a result therefrom.

Systems and methods for rapid measurement of the chemical and structural properties of plastic articles are provided. The systems and methods involve measuring both mechanical deformation of the plastic article and x-ray fluorescence of the plastic article in order to determine changes in composition as a result of contamination and/or issues associated with plastic article manufacturing lines. The systems and methods can be performed in minutes, compared to hours or days for typical testing methods.

An elasticity measurement apparatus includes a lower layer structure having first and second openings, first and second deformable membranes covering the first and second openings to define first and second chamber and deformable by pressure within the first and second chambers respectively, a support layer structure on the lower layer structure to protrude and configured to support the first and second deformable membranes to be spaced apart from the elastic body, a driving portion to apply pressure within the first and second chambers to deform the first and second deformable membranes, and first and second deformation detecting portions to detect deformations of first and second deformable membranes. When the pressure within the first and second chambers is increased from a first pressure to a second pressure, the first deformable membrane is deformed with contacting the elastic body, while the second deformable membrane is deformed without contacting the elastic body.

A shear box of shear rheology experiment of a soft rock for simulating the coupling of the rainfall seepage and blasting vibration includes an upper shear box, a lower shear box, a normally-loading indenter, a normally-loading cushion block and a test piece joint. The upper shear box is tightly connected to the lower shear box by a vertical roll. The vertical roll passes through the through holes at both sides of the upper shear box and is engaged with the lower shear box through female thread connection holes. The normally-loading indenter passes through a circular through hole and presses against the normally-loading cushion block. The first end of the test piece joint is installed into a water or gas outlet hole, and the second end of the test piece joint is directly mortised into a rock test piece.

The invention relates to a device and method for detecting the grout compactness of splice sleeve, the device comprising a preloading member, a force transmission rod, a telescopic adjustment member, a vibration sensor and a data acquisition system. The rigid preloading member is used to fix the force transmission rod to the wall where the connecting structure of the splice sleeve is located, so that the end of the force transmission rod can be securely fastened to a rebar surface of a splice sleeve to be detected; the vibration sensor is fixed to the force transmission rod; the data acquisition system is used to acquire vibration signals from the vibration sensor. The grout compactness of splice sleeve is quantitatively analyzed, and a time-domain and frequency-domain signal may be used to obtain a peak-to-width ratio R.sub.Npw and a peak frequency Ω.sub.Peak signal to serve as a standard for the quantitative analysis.

The invention relates to a device and method for detecting the grout compactness of splice sleeve, the device comprising a preloading member, a force transmission rod, a telescopic adjustment member, a vibration sensor and a data acquisition system. The rigid preloading member is used to fix the force transmission rod to the wall where the connecting structure of the splice sleeve is located, so that the end of the force transmission rod can be securely fastened to a rebar surface of a splice sleeve to be detected; the vibration sensor is fixed to the force transmission rod; the data acquisition system is used to acquire vibration signals from the vibration sensor. The grout compactness of splice sleeve is quantitatively analyzed, and a time-domain and frequency-domain signal may be used to obtain a peak-to-width ratio R.sub.Npw and a peak frequency Ω.sub.Peak signal to serve as a standard for the quantitative analysis.

An elasticity measurement apparatus includes a lower layer structure having first and second openings, first and second deformable membranes covering the first and second openings to define first and second chamber and deformable by pressure within the first and second chambers respectively, a support layer structure on the lower layer structure to protrude and configured to support the first and second deformable membranes to be spaced apart from the elastic body, a driving portion to apply pressure within the first and second chambers to deform the first and second deformable membranes, and first and second deformation detecting portions to detect deformations of first and second deformable membranes. When the pressure within the first and second chambers is increased from a first pressure to a second pressure, the first deformable membrane is deformed with contacting the elastic body, while the second deformable membrane is deformed without contacting the elastic body.

Provided is a deformation tester where a specimen is deformed after starting and can be observed and analyzed in any deformation state without removal. The tester includes: a detachable part repeating a relative displacement cycle of a second part to a first part, two portions of the specimen attached to a first and a second attachment portion of the first and the second part, the specimen deformed from a first to a second shape state and back to the first shape state during the cycle; and a main body part the detachable part is detachably attached to; wherein state retaining means for fixing a relative position of the second to the first part in at least one shape state is freely attachable to the detachable part mounted on the main body part and the detachable part with the state retaining means is freely attachable to the main body part.

The disclosure relates to a soft rock shear rheological test system with simulation of coupled rainfall seepage and blasting vibrations, which is at least provided with a loading device and a shear box. The loading device includes a frame (2), a normal static load electric cylinder (1) disposed on a top of the frame (2) and a normal dynamic load electric cylinder (16) disposed on a lower portion of the frame (2), a horizontal static load electric cylinder (5) and a horizontal dynamic load electric cylinder (12) disposed on both sides of the frame (2), and a reaction post (10). This test system can perform a dry-wet cycle operation on the test specimen without disassembling the shear box during the shear rheological test, and can truly simulate influences of rainfall seepage and blasting vibrations on the shear rheological effect of soft rock.