Essays about: "pith"

Showing result 1 - 5 of 8 essays containing the word pith.

  1. 1. Långsiktig torvnedbrytning för olika vegetationstyper på dikad skogsmark

    University essay from SLU/School for Forest Management

    Author : Carl Carlsson; Sofie Jönsson; [2023]
    Keywords : växthusgaser; torvmark; dikning;

    Abstract : Skogsklädda torvmarker i Sverige dikades i stor utsträckning mellan 1930- och 1980-talen i syfte att höja virkesproduktionen. Till följd av klimatproblemet har intresset för dikade torvmarkers bidrag till växthusgasutsläppen ökat under de senaste decennierna. READ MORE

  3. 2. Improving Pith Detection and Automated Log Identification using AI

    University essay from Linnéuniversitetet/Institutionen för datavetenskap och medieteknik (DM)

    Author : Muhammad Farooq; [2023]
    Keywords : Automated wood log identification; damaged log identification; pith detection; artificial intelligence; computer vision; machine learning; deep learning;

    Abstract : Tracking of tree logs from a harvesting site to its processing site is a legal requirement for timber-based industries. Wood log identification is an important task in the forestry industry and has traditionally relied on manual inspection by trained experts. READ MORE

  4. 3. Wood and moisture-induced strains in a large deformation setting in 3D

    University essay from Linnéuniversitetet/Institutionen för byggteknik (BY)

    Author : Fredrik Ström; Anwar Obeido; [2022]
    Keywords : Total Lagrangian; Finite element method; Large deformation theory; Deformation gradient decomposition; Moisture-induced strains; Hygroscopic; Orthotropic.;

    Abstract : Many studies have previously been done on moisture-induced strains in wood. An in- finitesimal/engineering strain model has been used for most of these studies, which is often an accurate approximation for small rotations. However, if large deformations oc- cur, then fictive strains are obtained resulting from the simplified engineering strain. READ MORE

  5. 4. Experimental and numerical analysis of orthotropic deformations of wood using Finite Strain Theory (large deformations) and the Finite Element Method (FEM) in 2D

    University essay from Linnéuniversitetet/Institutionen för byggteknik (BY)

    Author : Honghao Ren; [2021]
    Keywords : Orthotropic material; Largedeformation; Two-dimension; Non-linear elasticity;

    Abstract : This thesis involves the derivation of a constitutive model under large deformationtheory using Updated Lagrange method applied on an orthotropic material.Thefollowing aspects are included in this thesis work: introduction, theory, FEM implementation, derivation of constitutive model, calibration, result, discussion, conclusion and the future work. READ MORE

  6. 5. Evaluate Machine Learning Model to Better Understand Cutting in Wood

    University essay from Uppsala universitet/Institutionen för informationsteknologi

    Author : Md Tahseen Anam; [2021]
    Keywords : Machine Learning; Mask R-CNN; Image Analysis; Wood Image; Pith Detection; Knots; Cracks; Cutting Efficiency;

    Abstract : Wood cutting properties for the chains of chainsaw is measured in the lab by analyzing the force, torque, consumed power and other aspects of the chain as it cuts through the wood log. One of the essential properties of the chains is the cutting efficiency which is the measured cutting surface per the power used for cutting per the time unit. READ MORE