Aalto University, P.O. Box 11000, FI-00076 Aalto www.aalto.fi Author Toni Antikainen Name of the doctoral dissertation Non-destructive testing methods in veneer-based products manufacturing Publisher School of Chemical Technology Unit Department of Forest Products Technology Series Aalto University publication series DOCTORAL DISSERTATIONS 100/2015 Field of research Wood Product Technology Manu...

Sophisticated methods have often been developed in order to analyze the structure of materials and, in particular, to explain their microstructure or to make clear internal and superficial defects, such as cracks and notches. It is known, in fact, that the properties which determine the choice of a particular material for scientific applications strictly depend on its microstructure. Moreover, ...

Fusion of Non-Destructive Test (NDT) data results in more accurate estimation concrete strength when compared to any single NDT data. Estimation from assumes importance for health assessment and evaluation existing buildings, particularly those near the end their design life. Application machine learning tools response surface method has found popularity recent years this purpose. In study, uni...

Interaction of concrete with the persistent prevailing environmental condition will alter its material properties and cause deterioration. There are various causes distress in structure, such as improper construction practices, post-construction expansion due to Alkali-Aggregate Reaction (AAR), corrosion reinforcement, non-homogeneity concrete, development cracks shrinkage thermal stresses, agi...

Abstract. This paper presents the non-destructive testing (NDT) method to determine the resultant stresses in mild steel bar usually employed in structures. The technique utilized ultrasonic pulse-echo that determined the wave velocity change due to torque applied between bolt and nut. Mild steel bar with nominal diameter of 19 and 25mm were used. The specimen was loaded by means of a torque wr...

GMR sensors are widely used in many industrial segments such as information technology, automotive, automation and production, and safety applications. Each area requires an adaption of the sensor arrangement in terms of size adaption and alignment with respect to the field source involved. This paper deals with an analysis of geometric sensor parameters and the arrangement of GMR sensors provi...

Steel Fiber-Reinforcement is a way to strengthen concrete structures which results to be more flexible and less expensive than the conventional hand-tied rebars, while still increasing the tensile strength. In order to ensure the prescribed tensile strength, the conglomerate needs to have a certain volumetric density of fibers uniformily distributed over the structure. In this paper, a novel st...

Electromagnetic non-destructive controls are performed daily by steel manufacturers and user companies. Many methods exist, including Eddy Current Testing (ECT), Magnetic Particle Inspection (MPI), Incremental Permeability (MIP), Barkhausen noise (MBN) … In this domain, progresses constant, however there limitations accurate simulation tools able to improve the efficiency still expected. Most o...

The full exploitation of Composite Fiber Reinforced Polymers (CFRP) in so-called green aircrafts design is still limited by the lack of adequate quality assurance procedures for checking the adhesive bonding assembly, especially in load-critical primary structures. In this respect, contamination of the CFRP panel surface is of significant concern since it may severely affect the bonding and the...

The characterization of poplar wood assumes a strategic position to increase the competitiveness entire forest supply chain. From this aspect, identification quality represents primary objective for researchers and private landowners. can be defined via traditional visual methods based on experience technicians or using tools, such as incremental drills sound hammers. properties these traits, o...