Sökning: "sawn timber"
Visar resultat 1 - 5 av 45 avhandlingar innehållade orden sawn timber.
1. Appearance grading of sawn timber
Sammanfattning : Grading of sawn timber has by tradition been performed by manual ocular inspection of the wood surfaces. Even today, most wood produced is graded by manual inspection. LÄS MER
2. Appearance grading of sawn timber
Sammanfattning : .... LÄS MER
3. Microwave sensors for scanning of sawn timber
Sammanfattning : A microwave imaging sensor that measures the signal transmitted through a board was investigated with respect to the ability to predict the distribution of moisture and density in sawn lumber. Furthermore, the response from the sensor was related to strength properties of the boards. LÄS MER
4. Pith location and annual ring detection for modelling of knots and fibre orientation in structural timber : A Deep-Learning-Based Approach
Sammanfattning : Detection of pith, annual rings and knots in relation to timber board cross-sections is relevant for many purposes, such as for modelling of sawn timber and for real-time assessment of strength, stiffness and shape stability of wood materials. However, the methods that are available and implemented in optical scanners today do not always meet customer accuracy and/or speed requirements. LÄS MER
5. Modeling the effects of knots in Structural Timber
Sammanfattning : The main purpose of the pursued research is to increase knowledge of the effects of knots in structural timber so that characteristics of weaker timber may be determined and applied to improve current grading techniques. In the process, a three-dimensional fiber paradigm was established, which describes variations of local principle material axes in timber containing knots. LÄS MER