An accelerated loading road-testing system includes a plurality of loading mechanisms. The plurality of loading mechanisms are sequentially arranged along a first direction. The loading mechanism includes a supporting frame, a sliding assembly, and a loading assembly. The supporting frame includes a horizontal supporting beam disposed along a second direction. The horizontal supporting beam has a sliding state in which the horizontal supporting beam slides along a third direction, and a static state in which the horizontal supporting beam is static. The sliding assembly is slidable on the horizontal supporting beam along the second direction. The loading assembly includes a telescopic cylinder and a loading head. A first end of the telescopic cylinder is hinged to the sliding assembly, the second end of the telescopic cylinder is securely connected to the loading head, the telescopic cylinder is configured to always drive the loading head to move along the third direction.

An accelerated loading road-testing system includes a plurality of loading mechanisms. The plurality of loading mechanisms are sequentially arranged along a first direction. The loading mechanism includes a supporting frame, a sliding assembly, and a loading assembly. The supporting frame includes a horizontal supporting beam disposed along a second direction. The horizontal supporting beam has a sliding state in which the horizontal supporting beam slides along a third direction, and a static state in which the horizontal supporting beam is static. The sliding assembly is slidable on the horizontal supporting beam along the second direction. The loading assembly includes a telescopic cylinder and a loading head. A first end of the telescopic cylinder is hinged to the sliding assembly, the second end of the telescopic cylinder is securely connected to the loading head, the telescopic cylinder is configured to always drive the loading head to move along the third direction.

A computer-implemented method includes receiving, in computer memory, a first test data set that comprises results of a real-world test of a material, where the first test data set comprises a plurality of test data points. The method further includes identifying one or more critical points among the test data points in the first test data set and processing the first test data set with a computer processor to produce a second test data set with differing (e.g., fewer) test data points than the first test data set, wherein the second test data set includes all the test data points that were identified as critical points in the first test data set and at least some other data points.

A computer-implemented method includes receiving, in computer memory, a first test data set that comprises results of a real-world test of a material, where the first test data set comprises a plurality of test data points. The method further includes identifying one or more critical points among the test data points in the first test data set and processing the first test data set with a computer processor to produce a second test data set with differing (e.g., fewer) test data points than the first test data set, wherein the second test data set includes all the test data points that were identified as critical points in the first test data set and at least some other data points.

A method of offset load testing a tubular composite specimen with two pairs of aligned holes and having at least one defect, the method comprising: providing a testing apparatus having a pair of arms including a fixed arm and a mobile arm; securing the pair of arms using a fastener assembly in each of the two pairs of aligned holes; and moving the mobile arm to impart an offset load force to the tubular specimen. One aspect includes a method of offset load testing comprising: providing a testing apparatus having a pair of arms including a fixed arm and a mobile arm; providing a tubular composite specimen with a top portion and a bottom portion; securing the pair of arms to the top and bottom portions of the tubular composite specimen; and moving the mobile arm to impart an offset load force to the tubular composite specimen.

A method of offset load testing a tubular composite specimen with two pairs of aligned holes and having at least one defect, the method comprising: providing a testing apparatus having a pair of arms including a fixed arm and a mobile arm; securing the pair of arms using a fastener assembly in each of the two pairs of aligned holes; and moving the mobile arm to impart an offset load force to the tubular specimen. One aspect includes a method of offset load testing comprising: providing a testing apparatus having a pair of arms including a fixed arm and a mobile arm; providing a tubular composite specimen with a top portion and a bottom portion; securing the pair of arms to the top and bottom portions of the tubular composite specimen; and moving the mobile arm to impart an offset load force to the tubular composite specimen.

A sample stretch test device includes a setup table and grip modules arranged with regular intervals along an edge of a virtual arrangement circle around a center of the setup table and configured to grip a sample to be tested, and further includes at least any one of grip driving modules coupled to the setup table and configured to slide the grip modules along normals of the virtual arrangement circle in a horizontal direction parallel with the sample, and a pressing module disposed under the setup table and configured to press the sample in a vertical direction perpendicular to the sample.

A sample stretch test device includes a setup table and grip modules arranged with regular intervals along an edge of a virtual arrangement circle around a center of the setup table and configured to grip a sample to be tested, and further includes at least any one of grip driving modules coupled to the setup table and configured to slide the grip modules along normals of the virtual arrangement circle in a horizontal direction parallel with the sample, and a pressing module disposed under the setup table and configured to press the sample in a vertical direction perpendicular to the sample.

Expandable Jacket surrounding a pressuremeter probe prevents barrel shape to form and maintains cylindrical shape with uniform radial displacement throughout its height, removing shortcomings of the existing pressuremeters. For the pressuremeter probe to determine horizontal stress versus plane strain relationship in soils and intermediate geomaterials, an expandable comprises of one layer of circular arch shaped segmented plates surrounded by flexible bands or rings. The expandable jacket surrounds a membrane which itself surrounds a porous tube with holes. Borehole less than the diameter of probe is drilled either by pre-boring or self-boring and then pushing the probe with cutter ring. For the pressuremeter probe to determine horizontal stress versus plane lateral strain relationship for rocks, the expandable jacket comprises of two layers of the circular arch shaped segmented plates surrounded by flexible bands or rings and first layer surrounding a plurality of pistons, and second layer surrounding the first layer.

Expandable Jacket surrounding a pressuremeter probe prevents barrel shape to form and maintains cylindrical shape with uniform radial displacement throughout its height, removing shortcomings of the existing pressuremeters. For the pressuremeter probe to determine horizontal stress versus plane strain relationship in soils and intermediate geomaterials, an expandable comprises of one layer of circular arch shaped segmented plates surrounded by flexible bands or rings. The expandable jacket surrounds a membrane which itself surrounds a porous tube with holes. Borehole less than the diameter of probe is drilled either by pre-boring or self-boring and then pushing the probe with cutter ring. For the pressuremeter probe to determine horizontal stress versus plane lateral strain relationship for rocks, the expandable jacket comprises of two layers of the circular arch shaped segmented plates surrounded by flexible bands or rings and first layer surrounding a plurality of pistons, and second layer surrounding the first layer.