A method for predicting the electrical functionality of a semiconductor package, the method includes performing a first stiffness test for a first semiconductor package, receiving failure data for the first semiconductor package, the failure data includes results of an electrical test performed after the first semiconductor package is assembled on a printed circuit board, generating a database comprising results of the first stiffness test as a function of the failure data for the first semiconductor package, performing a second stiffness test for a second semiconductor package, identifying a unique result from the results of the first stiffness test in the database, the unique result aligns with a result of the second stiffness test, and predicting a failure data for the second semiconductor package based on the failure data for the first semiconductor package which corresponds to the unique result of the first stiffness test identified in the database.

Disclosed is an exemplary test apparatus having an autoclave head, a fretting mechanism connected on a first end to a first side of the autoclave head, a load train operably connected with a first end of the fretting mechanism, an autoclave adapter connected on a first side to a second side of the autoclave head, and a force balance assembly connected to a second side of the autoclave head and configured to equalize a pressure acting on the load train. Certain exemplary embodiments include an upper plate, a plurality of upper tie rods connected to a first side of the upper plate and a second side of the autoclave adapter, a lower plate, a plurality of lower tie rods connected to the first side of the autoclave head and a first side of the lower plate, and a pressure vessel sealingly connected to the first side of the autoclave head.

An environmental chamber includes an enclosure having opposed walls each wall having an aperture of size to receive a test specimen support therethrough. The apertures are aligned with each other along on a reference axis. A forced air source is configured to supply forced air in a direction to intersect with the reference axis within the enclosure. A diverter is positioned between the forced air source and the reference axis. The diverter is configured to receive the forced air and control the air flow past different portions of the reference axis. The environmental chamber is used with a load frame having test specimen supports extending into the opposed apertures. A method of directing more force air at the test specimen supports than at at least a portion of the test specimen to maintain a selected temperature gradient in the test specimen is also provided.

A heated or cooled sample holding stage for use in a nanoindentation measurement system is described. The geometry of the design and the selection of materials minimizes movement of a sample holder with respect to a nanoindentation tip over a wide range of temperatures. The system controls and minimizes motion of the sample holder due to the heating or cooling of the tip holder and/or the sample holder in a high temperature nanoindentation system. This is achieved by a combination of geometry, material selection and multiple sources and sinks of heat. The system is designed to control both the steady state and the transient displacement response.

An apparatus for testing paving samples includes a base that includes a paving sample tray about the cabinet and configured for translation relative to the cabinet. A roller is configured for imparting compressive forces to a sample carried by the sample tray. An arm is configured for moving the roller from a stowed position to an in-use position where the roller contacts the sample. A cylinder assembly having a piston therein supplies pressure forces to the arm to move the arm from the stowed position to the in-use position, wherein a depth of travel of the arm is limited by the sample. As the sample is compressed, the depth of travel increases. A measurement device is in communication with the cylinder for determining an amount of travel of the arm to thus determine an amount of compression of the sample.

An apparatus and method for determining time-dependence failure under constant temperature through high pressure true triaxial loading for hard rock, includes a pressure chamber and four actuators, wherein a sample bearing platform is arranged in a center of the pressure chamber, a sample bearing and containing chamber is arranged in a center of the sample bearing platform, and a confining pressure loading oil supply hole is formed in the sample bearing platform, and communicates with a confining pressure loading injection pump; each actuator includes a sealing cover, an annular end cover, a counter-force cylinder barrel, a piston, a piston rod, a sealing flange and a stress loading injection pump; a heating coil is arranged in the pressure chamber; a force sensor is fixedly mounted at the end part of the piston rod; and a pressure sensor is mounted in the sample bearing platform.

The present invention provides a polymer indentation method and tester that includes measuring the time taken by a polymeric material to recover a set portion of an initial deformation and use this duration as a material degradation indicator. The recovery time was found to be more sensitive to cable degradation than the specific compressive stillness (or indenter modulus) measured during the indentation phase, and this high sensitivity was achieved for both thermally aged and irradiated polymer.

An apparatus for measuring a degree of cure and a specific volume of a packaging material is provided, including: an upper load module configured for driving the rotation of an upper ball screw via an upper servo motor such that a force plate coupled to the upper ball screw moves downward and is thus positioned; a lower load module having a lower ball screw operating and moving via a lower servo motor such that a load joint group connected to the lower ball screw generates a corresponding displacement; an upper film cavity module connected to the upper load module; and a lower film cavity module disposed on the lower load module. The displacement of the load joint group enables a push rod to move upward. A heating pipe keeps constant the temperature of a subject to be measured in a cavity of the lower film cavity module.

Techniques are described for configuring a materials test system to perform materials tests on sample material(s). Such a materials test system may include a test controller and materials test device(s), which are connected to the test controller. In an embodiment, the materials test system receives input selecting a test controller type for the test controller of the materials test system and input for configuring a materials test device. Without the materials test system being connected with the test controller and the materials test device, generating configuration data based on the inputs. The generated configuration data may be loaded into the test controller, thereby configuring the materials test system.

A concrete temperature stress testing machine system and a testing method are provided, in which the concrete temperature stress testing machine system includes: a concrete temperature stress testing machine and a walk-in environment simulation laboratory system; and the concrete temperature stress testing machine includes a testing machine host and a concrete test specimen area. The testing machine host includes a rear fixed end, a front fixed end, and a pair of steel shafts connected between the rear fixed end and the front fixed end. The concrete test specimen area includes a moveable cross-head, a fixed cross-head, and a left side formwork, a bottom formwork and a right formwork connected between the moveable cross-head and the fixed cross-head.