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Detailed measurements were carried out near and within a turbine rotor using the Laser-2-Focus velocimeter. Testing was performed in a single stage cold air turbine at off-design conditions with a stator outlet Mach number of approximately 0.8. Instantaneous and averaged results of the velocity, the yaw angle, and the turbulence intensity provided information on the rotor flow field. This report describes the periodical and random unsteady effects of the stator wakes impinging on the rotor blades. In particular the constant unsteadiness contours clearly disclose the development of the wakes cut by the rotor blades. The objective of the study was to gain more insight into unsteady flow phenomena affecting losses, heat transfer, and related problems.

Recently, silicon-based THz video cameras have been demonstrated for industrial, surveillance, scientific, and medical applications in the THz range (300GHz to 3THz) [1]. Such camera implementations favor pixels with antennacoupled direct detectors for a low power dissipation and a high pixel count. Despite this progress, they lack the required sensitivity for passive imaging and imagers are in the need of artificial illumination to provide the required image quality. The choice has been to use expensive high-power focused illumination with a single direction for the incoming beam, which seriously limits the image quality due to its specular nature. Additionally, detectors in a focal-plane array configuration share the available source power and the image SNR further drops with the camera resolution. Like imaging at visible light, where shades or reflectors are commonly used, active THz imaging would greatly benefit from incoherent artificial light sources to adjust brightness, phase/frequency, and the direction of light to obtain the desired lighting conditions.

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The changes of ecological awareness of political initiatives give new rules for economy and industry with the aim to support environmental friendly technology. Research projects are focusing on lightweight designs especially in automotive and aerospace industry. This paper deals with the results of the application of lightweight materials, in detail with aluminum-magnesium-compounds and its manufacturing process. Thereby, the process chain from the production of semi-finished parts and the first subsequent process will be explained in detail with focusing on the modification of the intermetallic interface. The combination of hydrostatic co-extrusion and subsequent performed forging is an auspicious approach for the production of lightweight parts made of Al-Mg-compounds. In this contribution the main influencing parameters, experimental and numerical work, interface properties as well as the process analysis will be explained in detail.

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