Soda-lime glass Flat Glass Borosilicate Glass Leaded Glass Tempered Glass Laminated Glass Bulletproof Glass Fracture Patterns Primary Pattern Secondary Patterns The secondary patterns are concentric patterns. Applied to glass it refers to having particles that are arranged randomly instead of in a definite pattern.
Copy Of Glass Fracture Patterns Worksheet Glass Fracture Patterns Worksheet 1 Examine The Diagrams Below That Show A Side View Of A Window Both Course Hero
Calculate density of the glass.
. GLASS FRACTURE PATTERNS Name. The main objective of this activity is for students to get student to analyze and interpret glass analysis data and fracture pattern in order to determine what happen at a crime scene. Stess marks on the edge of a radial crack near the point of impact form right angles on the ____ side which the force was applied.
By the end of this activity you will be able to. 2nd Concentric Fractures Concentric circles that have the same center. 14 - Glass fracture patterns Activity 14-1 Apr.
By the end of this activity you will be able to. The cracks will appear radiating outwards from the point of impact making a star shaped fracture known as radial fracture. Determine the point of impact and direction of force.
Explain two different methods to determine the direction of the bullets based on glass analysis. Form on the same side of the glass as the point of impact. The fracture pattern of glass usually has both ____ and ____ line fractures.
Examine the diagrams below that show a side view of a window both before and after impact. Stack the series of activity pictures on the right with dashed lines to where the activity takes place ACTIVITY 14-1 GLASS FRACTURE PATTERNS Objectives. Examine the diagrams below that show a side view of a window both before and after impact.
When an object has been thrown through a glass pane a fracture forming a pattern somewhat like a spider-web will be seen. Tempered glass is also known as safety glass. By fortunate coincidence 60 per cent of the flat glass market at that time was for six-millimetre glass.
Find Volume of glass. Name ACTIVITY 14-1 GLASS FRACTURE PATTERNS Fracture patterns are unique. Start studying Chapter 14 Glass Evidence.
Glass fracture examinations can provide information as to the direction of the breaking force and the. 416 Glass Evidence ACTIVITY 14-1 GLASS FRACTURE PATTERNS Objectives. Of A Small Piece of Glass 1.
Explain your answer using the terms tension and compression. Wavy fracture lines also glass tends to break near areas of high. Examine the diagram of the glass fracture patterns below.
Window Glass 253-254 gml Pyrex Glass 229-239 gml. However it took 14 months of non-stop production costing the company 100000 a month before the plant produced any usable. Determine the point of impact and direction of force.
Draw an arrow indicating the direction in which the force was applied to the window. By the end of this activity you will be able to. Fracture features in a piece of glass reflect the nature of the glass and the direction of travel and velocity of the breaking object.
Draw an arrow indicating the direction in which the. Mass of water displaced Volume of water displaced Volume of piece of glass. Although the examination of a single crack may indicated a degree of similarity the overall composition and shape of cracks in these two types of glass differ significantly.
Explain your answer using the terms tension and compression 3. 15 - Glass quiz Shoe prints Ch. Analyze glass fracture patterns and.
13 - The refractive index Activity 14-4 modified Lab - Using Snells Law and solvents to determine the refractive index of known and unknown samples of glass Apr. Analyze glass fracture patterns and determine the order of the breaks in the glass. Jill Parsons Use this site-analysis to answer the following questions.
The glass is called an amorphous solid because its atoms are arranged randomly Figure 14-1. Determine the point of impact and direction of force. Compare and contrast fracture patterns in tempered glass safety glass and window glass.
1st Radial Fractures Start at the point of impact and radiate move outward from there. The radial fracture originates on the surface opposite to that on. ACTIVITY 14-1 GLASS FRACTURE PATTERNS Procedure.
Day-1-Students will first watch the video lecture or power-point glass analysis and take summary notes. Examine the diagrams below that show a side view of a window both before and after impact. By the end of this activity you will be able to.
Why Radial Concentric Fractures Form. Fracture patterns are unique. ACTIVITY 14-1 GLASS FRACTURE PATTERNS Procedure.
Form on the side opposite the point of impact. Mass the piece of glass. Tare beaker with water.
Pilkington built a pilot plant in 1953 and by 1955 he had convinced his company to build a full-scale plant. Draw an arrow indicating the direction in which the force was applied to the window. Examine the diagrams below that show a side view of a window both before and after impact.
Determine the point of impact and direction of force. Learn vocabulary terms and more with flashcards games and other study tools. Tie thread around glass.
Due to its irregular atomic structure when the glass is broken it produces a variety of fracture patterns. Fracture features in a piece of glass reflect the nature of the glass and the direction of travel and velocity of the breaking object. As the expert in glass you told the.
Draw an arrow indicating the direction in which the force was applied to the window. Fundamentals Investigations Chapter 14 Activity Handout Name ___________________ ACTIVITY 14-1 GLASS FRACTURE PATTERNS Procedure. TYPES OF CRACKS 1 Radial cracks.
Explain your answer using the terms tension and compression. Less force is felt on the side ways ends making the separation to be at the center. Use glass fracture patterns to explain how to sequence events that occurred to form the broken glass.
Glass fracture patterns worksheet answers. If you examined the actual glass could you determine who was telling the truth. Summarize how to determine the sequence of impacts on glass based on the fracture patterns.
Analyze glass fracture patterns and determine the order of the breaks in the glass. 14 Forensics Glass Evidence. Types of Glass OBJ Because glass is a stable material that does not deteriorate over time it has a variety of uses.
The notes will be submit to the instructor by the end of. Plain glass will yield true radial and concentric fractures which are similar to the sketch above. Use glass fracture patterns to explain how to sequence events that occurred to form the broken glass.
Glass fracture examinations can provide information as to the direction of the breaking force and the sequence of multiple impacts. Use glass fracture patterns to explain how to sequence events that occurred to form the broken glass. Activity 15-1- Glass Fracture Pattern Analysis Objectives write in your journal.
A hard brittle amorphous. 15 cast shoeprints lab. 45866_14_c14_p394-429indd 416 12107 65416 AM ACTIVITY 14-1 GLASS FRACTURE PATTERNS Objectives.
Three different impacts resulted in the breaking of the glass. SUSPEND the glass in water. Draw an arrow indicating the direction in which the force was applied to the window.
Learn vocabulary terms and more with flashcards games and other study tools.
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