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. Furthermore, a device for multidimensional, tomographic material and/or condition testing on a specimen to assess, in particular for carrying out the above method, is invented, wherein the device comprises a plurality of sensors each having electronics, wherein a sensor with electronics for recording and processing measurement data can be arranged on the test specimen or in a region of the test specimen at a plurality of predeterminable positions in each case, at least one sensor or the electronics of at least one sensor being designed for carrying out a plurality of different physical measurement methods on the test specimen and for generating, triggering and/or emitting pulses and/or signals required for carrying out at least one of the measurement methods. Finally, a corresponding sensor for one such device is disclosed.

Material selection systems and methods for constructing a musical instrument and/or where a selected material is a wood material are disclosed. One example material selection system includes a rating module and a rating database. The rating module includes an excitation device configured to act upon material samples; a vibration receiver in cooperation with the excitation device; a rating computer coupled to the vibration receiver, the rating computer configured to execute stored instructions for determining a set of material sample ratings based on FFT analysis of data collected by the vibration receiver; and an output device operatively coupled to the rating computer, the output device configured to output the determined set of material sample ratings to a rating database. Each set of material sample ratings is associated with a material sample. Another example material selection system may further include a selection module with a selection computer coupled to the rating database.

A density detection system uses a magnetic force feedback actuator positioner to maintain a precise selected pressure between transducer wheels and the surface of a sheet of material as the sheet of material moves through a position between transducer wheel and lift wheel. Consequently, the antiquated mechanical/pneumatic springs/airbags of prior art ultrasonic density detection systems are replaced with a highly responsive magnetic force feedback actuator positioner capable of providing a precise and relatively constant force that can react to the introduction of a sheet of material, and/or variations in the surface of a sheet of material, extremely rapidly without the bounce/recovery oscillations associated with prior art ultrasonic density detection systems. Consequently, precise density measurements of an entire sheet of material can be obtained with unprecedented accuracy.

A filler material is applied to a plurality of wood elements. The plurality of wood elements is bonded into a composite wood product, where the bonding includes delivering ultrasound energy to the plurality of wood elements. The ultrasound energy has a frequency within a frequency range of 10 kHz-20 MHz.

Non-limiting examples of the present disclosure relate to devices, systems and methods for conducting non-destructive evaluation (NDE) of a wooden specimen, where structural integrity of the wooden specimen is assessed without being compromised. A non-limiting example of a wooden specimen is a wooden utility pole. One or more NDE devices, attached to the wooden specimen, are configured to transmit and/or receive ultrasonic signals to execute NDE of the wooden specimen. An exemplary NDE device may be controlled by another computing device via a data transmission connection. Examples described herein pertain to a variety of coverages that comprise but are not limited to: coverage for a single NDE device; coverage for a system of two or more NDE devices that are utilized to conduct NDE of the wooden specimen; and coverage where one or more NDE devices interface with one or more computing devices to conduct NDE of the wooden specimen.

Present disclosure discloses method and system for assessing health of a wood specimen. Method receives ultrasonic data for each of a plurality of alignments of a transmitter and associated receiver across a cross-section of one or more cross-sections along a length of the wood specimen. The ultrasonic data comprises a pulse velocity, a transit time and a distance travelled by an ultrasonic pulse between the transmitter and the associated receiver. Thereafter, method measures relative features of the wood specimen using the ultrasonic data. Subsequently, method identifies a condition of the cross-section of the wood specimen based on the relative features using a trained ML model. Upon identifying the condition of the cross-section to be defective, method determines a position of a defect in the cross-section of the wood specimen using the relative features and determines a severity of the defect using the trained ML model and the relative features.

Embodiments of the invention include a system and method for detecting wood-boring species of insects in a structure (16), involving one or more primary (14) and reference (18) sensors and a signal conditioning and acquisition device (22) capable of being coupled to the sensors (14, 18). The system (10) also includes a processor (24) capable of being coupled to a non-transitory, computer-readable storage medium that includes program logic for execution by the processor (24). The program logic includes a logic module that receives signals originating from the sensors (14, 18) and discriminates between noise generated by any wood boring species in the structure and extraneous noise unrelated to the wood boring species of insects. The extraction of signal features based on pulse duration, signal spectra and signal envelope spectra can be used for insect pulse discrimination. A sound-suppressing sensor assembly (12) can be weighted to enhance the coupling of the primary sensor (14) with the structure (16) being tested.

A filler material is applied to a plurality of wood elements. The plurality of wood elements is bonded into a composite wood product, where the bonding includes delivering ultrasound energy to the plurality of wood elements. The ultrasound energy has a frequency within a frequency range of 10 kHz-20 MHz.

A method includes exciting a vibration of a solid material preferably in cylindrical shape, detecting the vibration by a pair of transducers attached at opposing positions on the solid material and preferably orthogonally aligned to the excitation force, adding the pair of sensor signals to mostly cancel bending mode signal components, and processing the added output signal to obtain a frequency spectrum. A method may also include identifying a resonance peak of an extensional mode diametrically symmetric, measuring a characteristic of the resonance peak, comparing the characteristic with a series of measured values for standard samples, and determining a defect status such as decay in a wooden pole solid material.

The present disclosure relates to evaluating an ovaling mode in a cylindrical object and determining a quality of the cylindrical object by analysis of the ovaling mode. In an embodiment, the present disclosure relates to a method for determining a structural quality of a cylindrical element, comprising measuring, as a result of a single applied force, surface vibrations of the cylindrical element via four or more surface transducers arranged on the cylindrical element along a circumference of the cylindrical element, the four or more surface transducers being equally spaced along the circumference, processing digital signals corresponding to each of the four or more surface transducers in order to generate a composite digital signal, transforming the composite digital signal to a frequency domain, comparing the transformed composite digital signal to a reference composite digital signal, and determining, based on the comparing, the structural quality of the cylindrical element.