Preview

Charpy Impact Test Lab Report

Good Essays
Open Document
Open Document
1156 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Charpy Impact Test Lab Report
III. RESULT AND DISCUSSION
The bi-directional jute fiber reinforced epoxy were subjected to mechanical characterization. Its mechanical properties were analyzed. The results revealed that the jute epoxy composite exhibited good mechanical properties.
A. Density And Void Fraction
One of the main factors that determine the properties of the composite is density. It is often found that the theoretical values of density will not match with the experimentally measured values. This is primarily due to the presence of air bubbles or also known as voids in the composite .This has a considerable contribution to influence the mechanical properties and the performance of the composite in the actual workplace. Elevated void contents usually mean lower
…show more content…
The Charpy impact test, also known as the Charpy V-notch test, is a high strain-rate test which determines the amount of energy absorbed by a material during fracture. The Charpy test specimens were made according to the dimensions of standard ASTM A370. One of the main reasons for concern for natural composites laminates generally is the low values of impact energy. These laminates show relatively low values of impact energy compared to metals. The ways to increase the impact energy of the composites laminates are being made the major area of research. The impact test was carried out by Charpy test and the results were recorded are shown in Table III. The fiber provides strength for the composite material, as the jute fiber percentage in the composite is only 42 percentage, the jute reinforced composites seems to have fair impact strength. The reason being jute fiber contains higher cellulose content and lower micro fibril angle results in higher work of fracture in impact …show more content…
This study examined the physical properties of epoxy composites reinforced by bi-directional jute fibers which can act as better reinforcement. It was found that jute/epoxy composites have mechanical properties of sufficient magnitude to compete with conventional synthetic composites. The use of untreated fiber and epoxy with mould have yielded very good mechanical properties which are proved from the experimental results. The mechanical properties of the bi-directional jute reinforced epoxy composites have given enough confidence to manufacture light weight and fairly satisfying strength parts for house hold applications like window frames, doors etc and automobile parts. But the actual weathering conditions on the laminate need to be studied thoroughly to use them in the respective applications. This study is expected to provide more comprehensive insight into biodegradable green

You May Also Find These Documents Helpful

  • Satisfactory Essays

    Nt1330 Final Exam

    • 798 Words
    • 4 Pages

    1.5 g/cm3 and elastic modulus of 120 GPa. If a kelvar-49-reinforced epoxy composite is to have…

    • 798 Words
    • 4 Pages
    Satisfactory Essays
  • Powerful Essays

    Material properties of the carbon-epoxy (SE 84LV/HSC/300g/400mm/37%/1 blue) used to constrict the composite where as follows:…

    • 2168 Words
    • 16 Pages
    Powerful Essays
  • Satisfactory Essays

    Dd94 Test Lab Report

    • 124 Words
    • 1 Page

    The DL3 metal detector was set to the 28# DD94 setting. A bag of 28# DD94 was passed through the metal detector, and it did not alarm. This bag was used to test all three metal detection standards (Ferrous, Non-Ferrous and Stainless Steel). All three metal detection standards alarmed the metal detector. The returned sample was then run through the detector on the top center of the bag of 28# DD94, and it did not alarm. The returned sample was run through the metal detector by placing it on the belt, and it did not alarm. Based on the testing that was conducted, it seems that the shape/size of the material may have allowed it to pass through the metal detector without being…

    • 124 Words
    • 1 Page
    Satisfactory Essays
  • Satisfactory Essays

    Compare the longitudinal and transverse stiffnesses (E11/E22) of the composite with the same matrix but different fibers. Given Em/Ef=25 and Vf=0.5…

    • 367 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    Introduction: The objective of the lab was to determine the amount of energy absorbed by a material during fracture. Another goal of this lab was to learn how to use impact-testing equipment and procedures. The lab materials included a specimen, which consists of a bar of either 6061-T6 Aluminum or 2024 Aluminum having a notch that was machined and an apparatus made up of a pendulum to impact the notched specimen.…

    • 656 Words
    • 3 Pages
    Good Essays
  • Satisfactory Essays

    Asddsa

    • 322 Words
    • 2 Pages

    Assignment 5 (30 points) 1. (5 points) Compute the longitudinal and transverse stiffness E1, E2 of an S-glass epoxylamina for a fiber volume fraction Vf = 0.7, using the properties from attached Tables. 2. (5 points) Plot the longitudinal stiffness E1 of an E-glass/nylon unidirectionally reinforced composite, as a function of the volume fraction Vf of fiber. Use the properties from attached Tables. 3. (5 points) Plot the longitudinal tensile strength of an E-glass/epoxy unidirectionallyreinforced composite, as a function of the volume fraction of fiber, assuming tensile strength follows a volume rule of additivity. Use the properties from attached Tables. 4. (5 points) What is the maximum volume fraction of spherical fillers that could be obtained in the particle-reinforced composite assuming cubic packing? Please show the step. 5. (4 points) Using the Takayanagi model and assuming uniform strain in the matrix, derive a relationship for the transverse, tensile compliance of a unidirectionally-reinforced composite. 6. (6 points) Two test specimens have the same Young’s modulus in tension. However, one of the specimens is homogeneous while the other one has two layers with one layer stiffer than other layer. How will the flexural modulus of the two specimens differ? Explain. (Hint, use Parallel and Series model to calculate the modulus to compare them. Assume the modulus of stiff material is 1X109MPa as and the modulus of soft material is 1X108 , and the volume fraction of each one is 0.5) Properties will be used for solving above problems: The modulus of S-glass is 85.5 GPa, the modulus of E-glass is 72.4 GPa, the modulus of Epoxy is 3.5 GPa and the modulus of polyamide (nylon) is 3.0 GPa. The tensile break strength of E-glass is 2.4 GPa and that of epoxy is 45 MPa. The break strain for E-glass and epoxy is 2.6% and 1.28%, respectively.…

    • 322 Words
    • 2 Pages
    Satisfactory Essays
  • Powerful Essays

    The experiment observed the mechanical deformation process of different materials by three tests: tensile test, impact test, and fracture-toughness test. The materials evaluated in the tensile test were annealed 1045 steel, cold rolled 1045 steel, 2024-T4 aluminum and cast iron. 2024-T4 aluminum is concluded to be most ductile (25.7 % reduction in area) and cast iron the most brittle (123 MPa). Effects of cold rolling in 1045 steel are apparent, as it has the highest strength among the materials tested (402 MPa yield strength). Impact test measured the impact energy of 1045 steel, 2024 aluminum, polypropylene (PP), and poly(methyl methacrylate) (PMMA). This test also observed the effect of temperature on material ductility. The fracture-toughness test was performed on 2024-T4 aluminum to determine a KIC of 35.3 MPam. From the experiment, it was found that the brittle-ductile transition temperature of PP is between 0 0C and room temperature, whereas the transition temperature of 1045 steel is between 25 0C and 100 0C.…

    • 3265 Words
    • 14 Pages
    Powerful Essays
  • Powerful Essays

    To be able to decide on what kind of material to choose for product design, there are some critical characteristics you must consider in choosing a material prior to manufacturing. Characteristics such as material strength and flexibility are two tests that have been done on common materials for architects and engineers to reference during the design process. The purpose of this lab is to produce an elastic modulus of a material, and a predicted yield strength. Stress and strain data will be produced through tensile testing and cantilever beam testing.…

    • 4723 Words
    • 19 Pages
    Powerful Essays
  • Satisfactory Essays

    INTRODUCTION This is report analyses raw data from tensile test of polyethylene and polystyrene materials; thus drawing comparisons with published data of mechanical properties of polyethylene and polystyrene materials. Also how chemical structures affects mechanical properties of polyethylene and polystyrene. Background theory Mechanical properties of a material relate to its resistance to changes, e.g. when loaded, deformed, rise in temperature etc. This depends on the structure and…

    • 591 Words
    • 3 Pages
    Satisfactory Essays
  • Good Essays

    With epoxy, home appliances are the typical beneficiaries because the powder doesn't stand up well to outdoor applications. As for polyester resin, a large number of outdoor and indoor applications undergo its coating process because UV-resistance and corrosion protection are guaranteed.…

    • 557 Words
    • 3 Pages
    Good Essays
  • Better Essays

    Spr 316 Final Report

    • 24402 Words
    • 98 Pages

    Figure 3.31: Locations of maximum stresses in FRP composites: (a) Flexure Beam; (b) Shear Beam ...................... 62…

    • 24402 Words
    • 98 Pages
    Better Essays
  • Good Essays

    Syllabus Spring 2013

    • 638 Words
    • 3 Pages

    investigated with a view towards materials selection and design. Skills emphasized: experimental technique, statistical analysis of data, and…

    • 638 Words
    • 3 Pages
    Good Essays
  • Better Essays

    Materials Lab Report

    • 1581 Words
    • 7 Pages

    Bibliography: Dowling NE (2007) Mechanical Behaviour of Materials 3 Ed. Pearson Prentice-Hall: New Jersey. Breburge B (1999) Cracks and Fracture. Academic Press: California. Gross D and Seeling T (2006) Fracture Mechanics with an Introduction to Micromechanics. Springer: Berlin. th Callister WD (2007) Materials Science and Engineering 7 ed. John Wiley and Sons, Inc: York.…

    • 1581 Words
    • 7 Pages
    Better Essays
  • Powerful Essays

    Kiruthika, A, Priyadarzini, T & Veluraja, K (2012) 'Preparation, properties and application of tamarind seed gum reinforced banana fibre composite materials ', Fibers and Polymers, vol. 13, no. 1, pp. 51-6.…

    • 8279 Words
    • 34 Pages
    Powerful Essays
  • Better Essays

    3. To determine the resistance of carbon steel and mild steel against sudden impact by Charpy Impact Test.…

    • 2289 Words
    • 10 Pages
    Better Essays