Abstract: Post-consumer recycled polyethylene terephthalate (PCR-PET) flake is treated with chelant to reduce discoloration and generation of non-intentionally added substances (NIAS) upon melt-processing for use in making thermoplastic articles from the PCR-PET flake.

Abstract: A method for the additive manufacturing of a component includes providing a powdered base material for a component, in particular a component for the hot gas path of a gas turbine, building up the component layer by layer on a building platform by fusing individual layers of the base material, and introducing an oxide dispersion strengthening into a region of the component to be additively manufactured by an oxidic additive, wherein the region is usually exposed to high thermomechanical loading during operation of the component.

Abstract: A method of applying a plurality of energy beams in the additive manufacture of a component includes a) providing a first and a second energy beam, each set up for the irradiation of a layer of a powder bed, wherein the first beam scans over a first irradiation area and the second beam scans over a second irradiation area, wherein the first and second irradiation areas are substantially arranged adjacent to each other and form part of a manufacturing plane, and b) assigning a scan vector to be scanned in the first irradiation area by the second energy beam, when a melt pool generated by the second energy beam during the scan of the vector is expected to cause less overlap with a powder bed outside of the component's geometry than a melt pool generated by the first energy beam would cause during the scan of the vector.

Abstract: A method of detecting malfunction in an additive powder-bed-fusion manufacturing process includes a) monitoring the additive manufacturing process and recording an acoustic incident when the incident is outside of a given tolerance range, wherein the incident is indicative for the malfunction, b) classifying the incident, and c) defining of a measure to counteract the malfunction. A corresponding method of additive manufacturing, a corresponding apparatus as well as an additive manufacturing device detect malfunctions.

Abstract: A seal segment for a turbine and an assembly for sealing the gaps between seal segments and stator vanes of a turbine. The seal segments have a plate-shaped wall, the first lateral surface of which faces the vane tips in the assembled state of the seal segments, is surrounded by a closed circumferential edge, and can be divided into four lateral wall sections, and the plate-shaped wall has a seal element which is arranged over the entire surface of the lateral surface. A number of seal lamellae which are secured on one side are provided on at least one of the lateral wall sections and/or on at least one of the seal lateral wall sections facing adjacent seal segments when the seal segments are assembled in a turbine so as to form a ring in order to reduce a flow along the corresponding lateral wall section.

Abstract: An alloy especially for additive manufacturing, which includes (in wt %): Boron (B) 0.01%-0.1%; Titanium (Ti) 0.15%-0.3%; Chromium (Cr) 22.5%-24.25%; Carbon (C) 0.55%-0.6%; Nickel (Ni) 10.0%-15.0%; Tantalum (Ta) 3.0%-4.0%; especially 3.5%; Iron (Fe) 1.0%-4.0%; Zirconium (Zr) 0.05%-0.6%; Tungsten (W) 6.5%-7.5%; optionally: Aluminum (Al) 0%-0.15%; Manganese (Mn)<0.1%, further optionally, but as low as possible Molybdenum (Mo), Niobium (Nb), Phosphor (P), Sulfur (S), Silicon (Si), Selenium (Se), Copper (Cu), Nitrogen (N), Oxygen (O), Hafnium (Hf), remainder Cobalt (Co).

Abstract: A seal segment for a turbine and an assembly for sealing the gaps between seal segments and stator vanes of a turbine. The seal segments have a plate-shaped wall, the first lateral surface of which faces the vane tips in the assembled state of the seal segments, is surrounded by a closed circumferential edge, and can be divided into four lateral wall sections, and the plate-shaped wall has a seal element which is arranged over the entire surface of the lateral surface. A number of seal lamellae which are secured on one side are provided on at least one of the lateral wall sections and/or on at least one of the seal lateral wall sections facing adjacent seal segments when the seal segments are assembled in a turbine so as to form a ring in order to reduce a flow along the corresponding lateral wall section.

Abstract: A method of processing a surface in additive manufacturing includes assembling a structure for a component by additive manufacturing out of a bed of a powdery base material, such that the structure is provided with an internal surface and a powdery base material covers at least a part of the internal surface, and actuating the base material relatively to the structure such that the internal surface is mechanically processed by the base material.

Abstract: A method for the additive manufacturing of a component includes providing a powdered base material for a component, in particular a component for the hot gas path of a gas turbine, building up the component layer by layer on a building platform by fusing individual layers of the base material, and introducing an oxide dispersion strengthening into a region of the component to be additively manufactured by an oxidic additive, wherein the region is usually exposed to high thermomechanical loading during operation of the component.

Abstract: A device for guiding a protective gas over a powder bed for the purpose of additive production. The device includes a gas inlet for introducing the protective gas to the powder bed and a stationary gas outlet for removing the protective gas, wherein the device is furthermore designed to guide the protective gas over the powder bed in a laminar manner, and wherein the device furthermore has an outlet opening, configured parallel to a powder bed plane, for suctioning the protective gas out of a construction chamber during additive production of a component. A method for guiding a protective gas flow over a powder bed for the purpose of additive production is provided.

Abstract: A method of processing a surface in additive manufacturing includes assembling a structure for a component by additive manufacturing out of a bed of a powdery base material, such that the structure is provided with an internal surface and a powdery base material covers at least a part of the internal surface, and actuating the base material relatively to the structure such that the internal surface is mechanically processed by the base material.

Abstract: An apparatus for a facility for additively manufacturing a component having a base forming a manufacturing surface, wherein the base includes a plurality of portions, and a plurality of temperature sensors being arranged in or below the manufacturing surface. At least one temperature sensor is further arranged in each portion and the temperature sensors are configured such that a temperature of each of the portions can be measured individually by the temperature sensors.

Abstract: A turbine blade for a turbomachine, having a blade airfoil with a blade tip region and a sealing region which has an auxetic material and is arranged and designed such that, when transitioning from a rest state to an operating state of the turbine blade, the blade tip region of the turbine blade expands in a first direction perpendicular to a longitudinal axis of the blade airfoil. An auxetic material is used for a turbine blade for sealing a gas path during operation of a turbomachine.

Abstract: A method for relieving mechanical stress in an additively built component includes providing a setup of an as-built component bonded to a build plate, applying an embrittlement agent at an interface between the component and the build plate, heating the setup of the component and the build plate to a predetermined temperature (Tp), such that the embrittlement agent diffuses into the setup at the interface, and inducing a crack separation of the plate and the component due to the embrittled interface during a cooling of the setup. A corresponding additively manufactured component is made by the method.

Abstract: A method of hydraulic fracturing, and tracer composites for use in the fracturing procedure, for tracing the production of formation water from one or more fractured zones. The tracer composites preferably include a formation water tracer material adsorbed onto a solid carrier material.

Abstract: A system and method to access a machine through a mobile device includes sending a machine key to a controller on-board the machine, and a mobile device key to the mobile device using a remote server. The mobile device sends a mobile device ID to the controller. The controller determines the mobile device key based on the mobile device ID and the machine key. The controller sends a random number to the mobile device. The mobile device processes the random number to derive a first processed random number, and sends the first processed random number to the controller. The controller processes the random number to derive a second processed random number. The controller enables a start button to send a request to start the machine, when the first processed random number matches the second processed random number. The controller starts the machine upon receiving the request to start the machine.

Abstract: A method of hydraulic fracturing, and tracer composites for use in the fracturing procedure, for tracing the production of formation water from one or more fractured zones. The tracer composites preferably include a formation water tracer material adsorbed onto a solid carrier material.

Abstract: A method of production allocation for multiple wells, fields, or other individual production sources which feed a common collection tank or battery. For any or each of the individual production sources, an oil-soluble or water-soluble tracer solution is added to the product stream flowing from the source and one or more downstream samples are then taken prior to the point at which the product stream combines with the product streams from any of the other sources. The individual oil production rate or water production rate of the tested production source is then determined using (i) the concentration of the oil-soluble tracer or water-soluble tracer in the tracer solution, (ii) the rate of addition of the tracer solution to the product stream, and (iii) the downstream concentration of the tracer in the oil phase or the water phase of the product stream.

Abstract: A method of hydraulic fracturing, and tracer composites for use in the fracturing procedure, for tracing the production of formation water from one or more fractured zones. The tracer composites preferably include a formation water tracer material adsorbed onto a solid carrier material.

Abstract: A method of hydraulic fracturing, and tracer composites for use in the fracturing procedure, for tracing the production of crude oil or other hydrocarbon liquid products from one or more fractured zones. The tracer composites preferably include an oil soluble tracer adsorbed onto a solid carrier material. A non-water soluble coating is preferable also included on the composite over the tracer compound.