摘要:
The invention relates to a rod-shaped fiber composite material (400) composed of a matrix (412) and a circular braid (402) embedded into the matrix. To increase the stability of the fiber composite material (400) and also to perform ducting functions for electricity and fluids, the wall of the circular braid is provided with wall chambers (408) which are separated by a phase boundary from the matrix (412) of the fiber composite material (400). These wall chambers (408) lead to inner and outer sections of the wall of the circular braid (402) being spaced apart, which is useful for the stability with regard to flexing and torsional loading in particular. Rod-shaped fiber composite materials (400) according to the invention can be used for creating stable structural components as well as for producing efficiently protected ducts. The invention further relates to an apparatus and a process which are useful for producing fiber composite material according to the invention.
摘要:
The invention relates to a rod-shaped fiber composite material (400) composed of a matrix (412) and a circular braid (402) embedded into the matrix. To increase the stability of the fiber composite material (400) and also to perform ducting functions for electricity and fluids, the wall of the circular braid is provided with wall chambers (408) which are separated by a phase boundary from the matrix (412) of the fiber composite material (400). These wall chambers (408) lead to inner and outer sections of the wall of the circular braid (402) being spaced apart, which is useful for the stability with regard to flexing and torsional loading in particular. Rod-shaped fiber composite materials (400) according to the invention can be used for creating stable structural components as well as for producing efficiently protected ducts. The invention further relates to an apparatus and a process which are useful for producing fiber composite material according to the invention.
摘要:
A pallet for receiving and transporting loads, having an upper platform for receiving the loads, and a substructure, which supports the upper platform and is constructed of an upper part and a lower part and several support members inserted between them. A good shock absorption, along with a rugged construction, is achieved because the support members each is of a held-together bundle of spike-like individual elements, which extend between the upper part and the lower part, can be laterally deflected with respect to each other and have damping properties.
摘要:
A pallet for receiving and transporting loads, having an upper platform for receiving the loads, and a substructure, which supports the upper platform and is constructed of an upper part and a lower part and several support members inserted between them. A good shock absorption, along with a rugged construction, is achieved because the support members each is of a held-together bundle of spike-like individual elements, which extend between the upper part and the lower part, can be laterally deflected with respect to each other and have damping properties.
摘要:
The invention relates to a membrane that heals on its own after being damaged mechanically as well as a method for producing said membrane which is used for pneumatic structures featuring an internal operating pressure of 10 mbar to 500 mbar. The inventive membrane is provided with a plastic layer on the pressure side, said plastic layer being interspersed with blisters that have a diameter ranging from 10μ to 200μ.
摘要:
The invention relates to a membrane that heals on its own after being damaged mechanically as well as a method for producing said membrane which is used for pneumatic structures featuring an internal operating pressure of 10 mbar to 500 mbar. The inventive membrane is provided with a plastic layer on the pressure side, said plastic layer being interspersed with blisters that have a diameter ranging from 10μ to 200μ.
摘要:
A pallet for receiving and transporting loads, having an upper platform for receiving the loads and block-like or strip-like support elements which are attached to or can be attached to its underside by connecting sections. At least the support elements are made of plastic with fiber material embedded therein. Advantageous shock absorbing properties, along with an advantageous structure, are achieved because the fiber material consists of natural fibers.
摘要:
A matrix shim system for generating magnetic field components superimposed on a main static magnetic field, comprising a plurality of annular coils, is characterized in that it comprises g groups G1 . . . Gg of coils, with g being a natural number ≧1, wherein each group Gi consists of at least two single annular coils connected in series, wherein each group Gi is designed to generate, in use, a magnetic field B z ( G i ) = ∑ n = 0 ∞ A n 0 ( G i ) · T n 0 . For each group Gi, there are at least two values of n for which A n 0 ( G i ) · R n { A 20 ( G i ) · R 2 , … , A N 0 ( G i ) · R N } ≥ 0.5 and N ≥ n ≥ 2 , with N: the total number of current supplies of the matrix shim system, and R: smallest inside radius of any of the annular coils of the matrix shim system. An individual, adjustable electrical current supply is provided for each group Gi of coils. The inventive matrix shim system is both simple in design and stable against current fluctuations.
摘要:
A sample container (2) for NMR measurements defines a volume (V) of sample substance. The sample container (2) has a first interface (G1) towards an environment (1) and a second interface (G2) towards the sample substance (3). A susceptibility jump at the second interface G2 is sufficiently large that the maximum value of |B′G2/B0| within the volume (V) is at least 0.5 ppm. The geometry of the sample container (2) is selected in such a fashion that, when a homogeneous magnetic field B0 has been applied, a location-dependent relative field change F is present in the volume (V), which is larger than 20 ppb at least at one point in a center partial volume (V1) and a first residual field (R1) in the center partial volume (V1) is smaller than 1.6 ppb. A second residual field (R2a) in the lower partial volume (V2a) is smaller than 30 ppb.
摘要:
A matrix shim system for generating magnetic field components superimposed on a main static magnetic field, comprising a plurality of annular coils, is characterized in that it comprises g groups G1 . . . Gg of coils, with g being a natural number ≧1, wherein each group Gi consists of at least two single annular coils connected in series, wherein each group Gi is designed to generate, in use, a magnetic field B z ( G i ) = ∑ n = 0 ∞ A n 0 ( G i ) · T n 0 . For each group Gi, there are at least two values of n for which A n 0 ( G i ) · R n max { A 20 ( G i ) · R 2 , … , A N 0 ( G i ) · R N } ≥ 0.5 and N ≥ n ≥ 2 , with N: the total number of current supplies of the matrix shim system, and R: smallest inside radius of any of the annular coils of the matrix shim system. An individual, adjustable electrical current supply is provided for each group Gi of coils. The inventive matrix shim system is both simple in design and stable against current fluctuations.