Abstract: A part management apparatus may include an acquisition unit configured to acquire part information indicating a part having a symptom of a failure among a plurality of parts configuring a drive mechanism mounted to a vehicle. The part management apparatus may include an identification unit configured to refer to a storage unit that is configured to store a material configuring each of the plurality of parts to identify a material of the part indicated by the part information. The part management apparatus may include a notification unit configured to notify a material management apparatus configured to manage an inventory of a material of a part, of information related to the material of the part.

Abstract: A magnet material producing method includes demagnetizing, by thermal demagnetization in an irreversible manner, a molded permanent magnet, by heating the permanent magnet in a presence of a reducing substance having a reducing property stronger than nitrogen molecules, and cooling the demagnetized permanent magnet to create a molded magnet material. A magnet material with a thickness of 30 µm or more contains, as main components, a rare earth element and a transition metal element. In the above described magnet material, a ratio of (b) a carbon concentration in a surface layer region that is a region within 10 µm from a surface of the magnet material to (a) a carbon concentration in an interior region that is a region arranged in a position away from the surface of the magnet material by more than 10 µm and having a thickness of 10 µm is 1.1 or more.

Abstract: A reuse determination system of a power unit for propelling a vehicle includes an acquisition section configured to acquire operation history data including torque data and number of rotations data of the rotating electrical machine, an estimation section configured to estimate a load of each of a plurality of components constituting the power unit, based on at least one of the torque data or the number of rotations data, and a determination section configured to compare, for each of the plurality of components constituting the power unit, each load estimated by the estimation section with a threshold set for each of the plurality of components and determine that the power unit is to be reused, when the load of each of the plurality of components estimated by the estimation section is equal to or less than the threshold set for each of the plurality of components.

Abstract: A vehicle management apparatus may include a collection unit configured to collect data indicating a state of a vehicle based on a detection result of a sensor configured to detect the state of the vehicle from a plurality of vehicles. The vehicle management apparatus may include a classification unit configured to classify the plurality of vehicles into a plurality of group according to a predetermined algorithm based on the data of each of the plurality of vehicles. The vehicle management apparatus may include an identification unit configured to identify, when a faulty vehicle in which a failure has occurred is present among the plurality of vehicles, another vehicle belonging to a group to which the faulty vehicle belongs from among a plurality of groups as a failure symptom vehicle having a symptom of occurrence of a failure.

Abstract: A part management apparatus may include an acquisition unit configured to acquire part information indicating a part having a symptom of a failure among a plurality of parts configuring a drive mechanism mounted to a vehicle. The part management apparatus may include an identification unit configured to refer to a storage unit that is configured to store a material configuring each of the plurality of parts to identify a material of the part indicated by the part information. The part management apparatus may include a notification unit configured to notify a material management apparatus configured to manage an inventory of a material of a part, of information related to the material of the part.

Abstract: A rotary electric machine system includes a rotary electric machine unit, a temperature adjustment unit, and a control unit. The rotary electric machine unit includes a rotary electric machine and a temperature detection unit. The rotary electric machine includes a stator core around which a coil is wound, and a rotor having a magnet. The temperature adjustment unit increases the temperature of the stator core. When a rotational speed of the rotary electric machine is in a predetermined high-speed rotation state, in a case in which the temperature detected by the temperature detection unit is less than a predetermined value, the control unit controls the temperature control unit to increase the temperature of the rotary electric machine.

Abstract: Heat-expandable microcapsules each having a core/shell structure which includes a core and a shell, wherein the core contains a volatile substance and the shell contains a polymer, the polymer being obtained by reacting a monomer mixture with an organic peroxide represented by general formula (1): wherein the R1 moieties each independently represent a C2-12 unsaturated hydrocarbon group, the unsaturated hydrocarbon group being optionally separated by one or more of —CO—O—, —O—CO—, and —O—.

Abstract: A rotary electric machine system includes a rotary electric machine unit, a temperature adjustment unit, and a control unit. The rotary electric machine unit includes a rotary electric machine and a temperature detection unit. The rotary electric machine includes a stator core around which a coil is wound, and a rotor having a magnet. The temperature adjustment unit increases the temperature of the stator core. When a rotational speed of the rotary electric machine is in a predetermined high-speed rotation state, in a case in which the temperature detected by the temperature detection unit is less than a predetermined value, the control unit controls the temperature control unit to increase the temperature of the rotary electric machine.