Discussed is an apparatus for inspecting swelling of a battery cell, the apparatus including a first plate configured in a plate shape; a second plate configured in a plate shape and located to face the first plate to be spaced therefrom by a predetermined interval, the second plate being configured so that the battery cell is to be interposed between the first plate and the second plate; a fixing frame configured so that a portion of the first plate is fixedly coupled thereto; a connection frame having one end fixedly coupled to the second plate and another end fixedly coupled to the fixing frame; and a measuring element attached to the connection frame and configured to measure a deformation rate of the connection frame based on the swelling of the battery cell.

Discussed is an apparatus for inspecting swelling of a battery cell, the apparatus including a first plate configured in a plate shape; a second plate configured in a plate shape and located to face the first plate to be spaced therefrom by a predetermined interval, the second plate being configured so that the battery cell is to be interposed between the first plate and the second plate; a fixing frame configured so that a portion of the first plate is fixedly coupled thereto; a connection frame having one end fixedly coupled to the second plate and another end fixedly coupled to the fixing frame; and a measuring element attached to the connection frame and configured to measure a deformation rate of the connection frame based on the swelling of the battery cell.

A module strain estimating apparatus, including: a module information obtaining unit configured to obtain a plurality of numerical information for a battery module; and a processor configured to: receive the plurality of numerical information from the module information obtaining unit, generate a first profile representing a correspondence between a force applied from the inside to the outside of the battery module and a strain of the battery module, and a second profile representing a correspondence between the force and a stress of the battery module based on a preset learning module and the plurality of numerical information, generate a third profile representing a correspondence between the strain and the stress of the battery module based on the first profile and the second profile, and estimate the strain of the battery module according to the stress of the battery module based on the third profile.

A module strain estimating apparatus, including: a module information obtaining unit configured to obtain a plurality of numerical information for a battery module; and a processor configured to: receive the plurality of numerical information from the module information obtaining unit, generate a first profile representing a correspondence between a force applied from the inside to the outside of the battery module and a strain of the battery module, and a second profile representing a correspondence between the force and a stress of the battery module based on a preset learning module and the plurality of numerical information, generate a third profile representing a correspondence between the strain and the stress of the battery module based on the first profile and the second profile, and estimate the strain of the battery module according to the stress of the battery module based on the third profile.

The present invention relates to an apparatus and a method for determining a scaling factor for a strain measurement in a machine element, comprising steps for measuring a strain in a measurement surface portion by means of a strain measuring device; for measuring a displacement of a detection surface portion of the machine element by an optical scanning; for determining a displacement field on a surface of the machine element on the basis of a model of the machine element and the measured displacement of the at least one detection surface portion; for determining a strain field on the surface of the machine element on the basis of the determined displacement field and the model of the machine element; and for determining a scaling factor of the strain measuring device on the basis of the determined strain field and the measured strain in the measurement surface portion.

The present invention resides in a sensorized roller of a roller bearing. The sensorized roller includes a roller bore that accommodates a measuring device for measuring deformation of the roller bore and electronics for processing a deformation signal from the measuring device and wirelessly transmitting the processed deformation signal to an external receiver. According to the invention, the measuring device and electronics are mounted in a rigid housing that is shaped to fit within the roller bore. A radially outer surface of the housing includes at least one aperture associated with the measuring device. Furthermore, the rigid housing is resiliently mounted to the roller bore via first and second sealing elements that enclose a radial gap between a radially inner surface of the roller bore and a radially outer surface of the housing.

The present invention resides in a sensorized roller of a roller bearing. The sensorized roller includes a roller bore that accommodates a measuring device for measuring deformation of the roller bore and electronics for processing a deformation signal from the measuring device and wirelessly transmitting the processed deformation signal to an external receiver. According to the invention, the measuring device and electronics are mounted in a rigid housing that is shaped to fit within the roller bore. A radially outer surface of the housing includes at least one aperture associated with the measuring device. Furthermore, the rigid housing is resiliently mounted to the roller bore via first and second sealing elements that enclose a radial gap between a radially inner surface of the roller bore and a radially outer surface of the housing.

A concrete temperature stress testing machine system including: a concrete temperature stress testing machine and a walk-in environment simulation laboratory system; and the walk-in environment simulation laboratory system includes a walk-in environment simulation laboratory, a host control cabinet, a compressor set room, an environment room control cabinet and a computer. The concrete temperature stress testing machine achieves the temperature deformation self-compensation by using the combination of different proportions of invar and No. 45 steel, an embedded type directly measuring deformation technology of the concrete temperature stress testing is achieved by the fit between the upper and side embedded parts, the embedded rod and the extending rod. The concrete temperature stress testing machine system according to embodiments of the present disclosure may compensate the impact of the temperature deformation by itself and directly measure the true deformation of concrete, thereby having high accuracy, good long-term stability, easy operation and other advantages.

A battery pack, which may accurately detect swelling of a battery cell according to a situation. The battery pack includes a battery cell having an electrode assembly, an electrolyte, a battery case and an electrode terminal; a deformation measuring unit at least partially attached to an outer surface of the battery case of the battery cell and configured to measure whether the battery case is deformed; an impedance measuring unit connected to the electrode terminal of the battery cell and configured to measure impedance inside the battery cell; and a control unit configured to determine whether the battery cell is swelled by using a deformation measurement result of the deformation measuring unit and an impedance measurement result of the impedance measuring unit.

In a method for determining the elongation of segments of a chain of a chain drive during operation, a plurality of measured values is determined at different positions of the chain. A plurality of length values is determined from the plurality of measured values and a position of the segments of the chain is determined. The length values are assigned to the segments of the chain, with the length of the segments of the chain being smaller than the length of the chain.