Abstract: A method for multidimensional, tomographic material and/or condition testing on a test specimen is invented, wherein a sensor with electronics for sending, recording and processing measurement data is arranged in each case on the test specimen or in a region of the test specimen at a plurality of predeterminable positions, wherein at least one sensor or the electronics of at least one sensor is used for carrying out a plurality of different physical measurement methods on the test specimen and for generating, triggering and/or transmitting pulses and/or signals required for carrying out at least one of the measurement methods.

Abstract: With a view to a particularly simple and reliable assessment and evaluation of the fracture safety of a defective tree (1) by structurally simple means, a method for determining the fracture safety of a tree (1) is provided, comprising the following steps: Determining a trunk cross-section (4) of the tree (1) to be assessed; detecting at least a largest and a smallest diameter in the trunk cross-section (4) as well as a shape with possibly existing damages of the trunk cross-section (4); calculating—starting from an axis running through a geometric center of gravity of the trunk cross-section (4)—the neutral axis—a percentage relative direction-dependent load-bearing capacity in a plurality of definable directions via moments of resistance respectively associated with the trunk cross-section (4) and specifically determined in accordance with anisotropy of the material, wherein, in order to calculate a respective percentage relative direction-dependent load-bearing capacity for each of the plurality of definab

Abstract: A device is provided for determining material properties of a material, preferably a wood or a wooden material, having a pin arrangement having at least two pins, a drive unit for at least partially driving the pins into the material using a defined force, and a measuring unit for measuring both the penetration depth of at least one of the at least two pins and also an electrical resistance between two of the pins.

Abstract: A device is provided for determining material properties of a material, preferably a wood or a wooden material, having a pin arrangement having at least two pins, a drive unit for at least partially driving the pins into the material using a defined force, and a measuring unit for measuring both the penetration depth of at least one of the at least two pins and also an electrical resistance between two of the pins.

Abstract: A device for measuring resistance to drilling in a material being investigated, especially wood, with a drilling appliance (1) driving a drill bit (2) into the material and a measuring device for measuring the mechanical resistance to the drill bit (2) upon its penetration into the material, is configured and modified in regard to a secure measurement even in tight space conditions around the material being investigated such that the drilling appliance (1) is coordinated with several U-shaped guide elements (4) which can move along a drilling axis (3) with legs (5, 6) of different length and a base region (7) joining the two legs (5, 6), and in each longer leg (6) a passage (8) is formed for the drill bit (2) in order to guide the drill bit (2).

Abstract: A method and a device for material testing, in particular on trees and timbers, is characterized in that a measurement and preferable recording (storage) of the mechanical penetration resistance of at least two motor (2)-driven, rotating drilling tools (1) penetrating simultaneously into the material beside each other is combined with the measurement and preferable recording of the electrical resistance between just these tools (1).

Abstract: A device for measuring resistance to drilling in a material being investigated, especially wood, with a drilling appliance (1) driving a drill bit (2) into the material and a measuring device for measuring the mechanical resistance to the drill bit (2) upon its penetration into the material, is configured and modified in regard to a secure measurement even in tight space conditions around the material being investigated such that the drilling appliance (1) is coordinated with several U-shaped guide elements (4) which can move along a drilling axis (3) with legs (5, 6) of different length and a base region (7) joining the two legs (5, 6), and in each longer leg (6) a passage (8) is formed for the drill bit (2) in order to guide the drill bit (2).

Abstract: A material testing multisensor comprising at least one receiving sensor (1) with at least two pins (2), which are electrically conductive, preferably in the front region, can be driven with a defined force into a test piece to be investigated and, depending on their depth of penetration, allow the average density there to be concluded and, depending on the electrical conductivity between the pins (2), allow the ion content between them to be concluded, and also comprising at least one transmitter (3) or transmitter sensor, with which the test piece is tapped at at least one location, preferably at a number of locations, in the case of round cross sections for example seven evenly distributed locations, in order to measure and evaluate the sound transit time and other properties of the generated shockwaves at the receiving sensor (1). Also provided is a method for material testing with such a material testing multisensor.

Abstract: A method and a device for material testing, in particular on trees and timbers, is characterized in that a measurement and preferable recording (storage) of the mechanical penetration resistance of at least two motor (2)-driven, rotating drilling tools (1) penetrating simultaneously into the material beside each other is combined with the measurement and preferable recording of the electrical resistance between just these tools (1).

Abstract: A device for examining materials, in particular trees, other kinds of wood, and concrete, with a pulse generator (1) for generating a pulse that can be introduced into the material (2), with at least one sensor (3) adapted for being associated to the material (2) for detecting the pulse, and with an electronic evaluation device (4) for discriminating the pulse from interference pulses, is designed and constructed with respect to a universal application to even large test pieces of the material (2) being examined in such a manner that an electronic evaluation device (4) is associated to each sensor (3).