Tuesday, March 31, 2009
Term 1 Week 8
This week I worked the stringer of my board and my blog. On Monday Period 3 I continued on my first flax layer for my stringer. During Period 4 I restarted my flax layer because I realized a quicker way to make it. This worked out well as I only had to do 22 cm of flax strips instead of about 80cm of flax strips. On Wednesday I Updated my blog as much as possible. I could not completly get up to date with our checklist because of lack of time and also lack of photos to post. On Thursday I finished my first layer for the flax stringer. I made it a bit larger each way so it would easily accomodate my longboard size. Once I finished it I flattened it in between plywood and clamped it to make it tight. Next week I should complete my second layer of flax for my stringer and will probably update my blog.
Tuesday, March 24, 2009
Term 1 Week 7
On Monday double period I started my stringer for my longboard. I used strips of flax to do this. It was very time consuming making each strand and tieing it to a base piece. Once I got the hang of it I got quite fast at making the strips and tieing them. On Wednesday I Updated my blog by posting my freehand artwork of my longboard. I also updated my calender putting in what I had done each day. On Thursday I continued on my flax stringer and got quite far through it. Next week I will finish the one side of my stringer, making it ready for compressing, and should also update my reflections.
Tuesday, March 17, 2009
Saturday, March 14, 2009
Term 1 Week 6
Week 6 was mainly focused on preparing for the practical lessons ahead. On Monday I updated week 5 of reflections, updated my calender and also completed and posted the research on flax properties. On Wednesday I started my project on freehand of creating my longboard and taking 'print screens' at each significant step of creating. I found it quite hard to remember the 'print screens' at each step so occasionally I had to retrace my steps to get the required 'print screens'. On Thursday I continued to work at my longboard design on the freehand program. Changing my vinyl design half way through took time which didn't allow me to finish the design on freehand. Next week I will finish my design and post up the 'print screens' to my blog. I will possibly also start on the 'stringer' of my board.
Sunday, March 8, 2009
Flax Research
Tensile Strength
The fibres of the flax plant are very strong. When the fibre strands are together like a normal piece of flax the tensile strength becomes very high making this great for home projects.
Hardness
Flax is some what hard as the fibre strands are joint very closely together. It is also quite durable to bumps and scratches.
Ductility
Flax is very ductile as it only has a thin layer of fibres. These fibres are very strong allowing the flax piece to be bent and folded.
Shear Strength
Flax is well known for its shear strength. It is a very strong plant with long fibre strands built close together. The shear strength of flax makes this great material for tasks such as weaving.
The fibres of the flax plant are very strong. When the fibre strands are together like a normal piece of flax the tensile strength becomes very high making this great for home projects.
Hardness
Flax is some what hard as the fibre strands are joint very closely together. It is also quite durable to bumps and scratches.
Ductility
Flax is very ductile as it only has a thin layer of fibres. These fibres are very strong allowing the flax piece to be bent and folded.
Shear Strength
Flax is well known for its shear strength. It is a very strong plant with long fibre strands built close together. The shear strength of flax makes this great material for tasks such as weaving.
Term 1 Week 5
On Monday double period I done research on the properties of Epoxy Resin, Plywood and Fiberglass. I found it quite hard to find some of the needed properties for the materials that we researched. I then posted my research results on the blog. On Wednesday I started my half scale mock-up of my chosen longboard design by drawing it out and cutting it out. On Thursday I worked on my mock-up by drawing up my basic vinyl design outline. Next week I will colour my mock-up and also update my blog. I will also work on my final freehand design of my longboard and do the research on the properites of flax.
Term 1 Week 4
On monday during our double period we went to Waitangi Park for a field trip. At Waitangi Park we individually found "the perfect skating place" to complete our givin brief. We took a few pictures of our skating place and are going to post them to the blog soon. P4 on Monday I also posted a few more things to my blog. On Wednesday we had a reliever and done some research worksheets to do with Epoxy Resin. On Thursday we done some research worksheets to do with Fiberglass and Plywood. Next week I will create my half scale mock-up and will also research the properties of Epoxy resin, fiberglass and plywood.
Sunday, March 1, 2009
Epoxy Resin Research
Epoxy Resin Properties
Tensile Strength
Once the epoxy adhesive has dried it has a very high tensile strength.
Hardness
The dried and hardened epoxy is very hard and firm giving it strong bonding. The chemical bases of epoxy resin make this adhesive very strong and hard.
Ductility
Epoxy has low ductility once it has dried and hardened but is very ductile at its liquid adhesive stage.
Shear Strength
The epoxy resin adhesive has high shear strength once dried as the chemical bases harden the mixture to a dense solid.
Tensile Strength
Once the epoxy adhesive has dried it has a very high tensile strength.
Hardness
The dried and hardened epoxy is very hard and firm giving it strong bonding. The chemical bases of epoxy resin make this adhesive very strong and hard.
Ductility
Epoxy has low ductility once it has dried and hardened but is very ductile at its liquid adhesive stage.
Shear Strength
The epoxy resin adhesive has high shear strength once dried as the chemical bases harden the mixture to a dense solid.
Marine Grade Ply Research
Properties
Tensile Strength
High uniform strength: Wood is 45 times stronger along the grain than across the grain. Crossing the adjacent sheets tends to equalize the strength in all directions giving it very high tensile strength.
Hardness
Plywood has very hard surface strength. Has high damage and wear resistance.
Ductility
Plywood’s cross layer design makes the ductility low as it does not allow the wood to be bent along the grain of the sheet of wood.
Shear Strength
Plywood has very high shear strength. Its cross grain sheets layered allow the grain to work against strain horizontally and vertically along the sheet of plywood.
Tensile Strength
High uniform strength: Wood is 45 times stronger along the grain than across the grain. Crossing the adjacent sheets tends to equalize the strength in all directions giving it very high tensile strength.
Hardness
Plywood has very hard surface strength. Has high damage and wear resistance.
Ductility
Plywood’s cross layer design makes the ductility low as it does not allow the wood to be bent along the grain of the sheet of wood.
Shear Strength
Plywood has very high shear strength. Its cross grain sheets layered allow the grain to work against strain horizontally and vertically along the sheet of plywood.
Fibreglass Research
Fibreglass Properties
Tensile Strength
Two types of fiberglass most commonly used are S-glass and E-glass. E-glass has good insulation properties and it will maintain its properties up to 1500 degree F(815 deg C). S-glass has a high tensile strength and is stiffer than E-glass.
Hardness
High strength to weight ratio and high flexural strength. Fibreglass is an attractive lightweight material that builds strength into almost any finished product or component. Pound for pound fibreglass can be stronger than steel and sheet metals. Highly resistant to environmental extremes. Fibreglass is built to last. Dollar for dollar, fibreglass reinforced plastic products provide better performance than plain non-reinforced plastic units.
Ductility
Fibreglass lacks the useful property of ductility. Fibreglass has a low ductility rating making it inflexible and cannot bend much.
Shear Strength
Fibreglass has a high shear strength rating. This makes it strong and hard to break. Its strength makes it the perfect material for light weight projects.
Tensile Strength
Two types of fiberglass most commonly used are S-glass and E-glass. E-glass has good insulation properties and it will maintain its properties up to 1500 degree F(815 deg C). S-glass has a high tensile strength and is stiffer than E-glass.
Hardness
High strength to weight ratio and high flexural strength. Fibreglass is an attractive lightweight material that builds strength into almost any finished product or component. Pound for pound fibreglass can be stronger than steel and sheet metals. Highly resistant to environmental extremes. Fibreglass is built to last. Dollar for dollar, fibreglass reinforced plastic products provide better performance than plain non-reinforced plastic units.
Ductility
Fibreglass lacks the useful property of ductility. Fibreglass has a low ductility rating making it inflexible and cannot bend much.
Shear Strength
Fibreglass has a high shear strength rating. This makes it strong and hard to break. Its strength makes it the perfect material for light weight projects.
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