Friday, December 21, 2007
Belize
Off to Belize tonight with the parents. I'll try and post something from there in the next two weeks. Assuming I'm not too busy getting a tan.
Monday, December 17, 2007
Friday, December 14, 2007
Tuesday, December 11, 2007
Midweek Pass
Bridger was good today. Except for a couple of rocks. There were strange downhill winds that blew a bunch of the snow off the top.
(They're links)
(They're links)
Sunday, December 9, 2007
Thursday, December 6, 2007
Strain
From my thesis project. . . this is a 1.25" tall by 1" wide by .03" thick piece of carbon fiber laminate with a notch cut in one side. The top of it has been displaced vertically upward by around .025" with around 1000lbs of force.
This picture is a graphical represnetation of strain in the x (horizontal) direction under tension in the y. The blue is negative strain (compression) induced mostly by the carbon fiber laminates geometry, which has the strong carbon fibers aligned from the notch to the left corners at 30 degrees from vertical ([±30]s ). The fibers covered by blue are holding most of the force right now.
My project uses a canon digital rebel and a series of Matlab programs to measure strain off the whole surface of a sample optically for thousands of dollars less then a comparable commercial system and with more flexibility.
This picture is a graphical represnetation of strain in the x (horizontal) direction under tension in the y. The blue is negative strain (compression) induced mostly by the carbon fiber laminates geometry, which has the strong carbon fibers aligned from the notch to the left corners at 30 degrees from vertical ([±30]s ). The fibers covered by blue are holding most of the force right now.
My project uses a canon digital rebel and a series of Matlab programs to measure strain off the whole surface of a sample optically for thousands of dollars less then a comparable commercial system and with more flexibility.
Tuesday, December 4, 2007
Friday, November 30, 2007
Wednesday, November 28, 2007
Snow in the Bridgers
This picture is from last Wednesday south of Bridger Bowl. Really light, fluffy snow that was waist deep in a lot of places on top of lots of rocks. Dangerous for equipment.
Tuesday, November 27, 2007
Turkey Day
Deer in the front yard at the parents house, snow in their backyard, pygmy owls knocking themselves out on the windows and weird smog from a refinery near butte on the way back to Bozeman.
Monday, November 19, 2007
Salt Lake City
Marshall took a job in Salt Lake City at IM Flash. I went down there with him to help him find a place to stay this last weekend.
PHOTO MAP
PHOTO MAP
Thursday, November 15, 2007
Tuesday, November 13, 2007
Biking Baldy
Stellar Dendrite
I found this pic on the wall in one of MSU's cold regions laboratories. It's a Stellar Dendrite, a form of snowflake that forms in high humidity. They are generally associated with excellent skiing snow. . .
Sunday, November 11, 2007
HDR
High dynamic range
The above image was made from 3 different images at 2 EV spacing. One was 2 stops underexposed, one 2 stops over and one in the middle. Each image has it's own dynamic range of brightness values that it can cover. To make the HDR image these three overalapping ranges are combined to create an image that covers all of them at once. Hence the sunset AND the town can be properly exposed simultaneously.
Another way to do it is just take an over-exposed RAW image, back the exposure off in photoshop and increase the gamma (midrange brightness) with fill light. RAW images have more color and dynamic range information then can actually be displayed on the screen. This technique just displays more of it then usual. This doesn't cover as large of a dynamic range as the previous technique, but I think it looks better. What do you think?
(edited on monday to include more info and another images)
Tuesday, November 6, 2007
Dyno Testing
I went to Dynojet with my senior design group and did some dyno testing on the Benz. The best run was 98 HP at the rear wheels on straight diesel. Biodiesel averaged about 5hp less. We tested B99 (99% biodiesel), B50, straight diesel, and the stuff that was in my tank which is about B70 with an anti-gel additive. It was pretty fun reving the car almost to red line at 80 up on the dyno repeatedly. These data will be compared later with what the vegetable oil system can produce. The graph below shows the power curve of the engine in 3rd gear, where it hits 5,000 RPM around 80 and power drops off significantly. I stopped reving after it was dropping off, hence the steep slope at the end of the curve. Fortunately my engine didn't blow up.
Monday, November 5, 2007
Weekend activites.
We had some excellent weather this weekend, I tried to take advantage of it.
Started with a bike ride on Friday:
Skied on Emigrant peak again on Saturday:
And then went biking on Sunday up Grassy Mountain:
The biking was excellent, the skiing was excellent, I really can't complain. Now it's daylight savings time and biking after school will require leaving at 3. . .
That's in 15 minutes. . .
Started with a bike ride on Friday:
Skied on Emigrant peak again on Saturday:
And then went biking on Sunday up Grassy Mountain:
The biking was excellent, the skiing was excellent, I really can't complain. Now it's daylight savings time and biking after school will require leaving at 3. . .
That's in 15 minutes. . .
Sunday, November 4, 2007
Thursday, November 1, 2007
Wapta
From a trip to Canada with Rob, Marshall and Tarby last spring. Tough to get photos with any contrast when everything is bright white. We got some good face tans from that trip.
Tuesday, October 30, 2007
Thursday, October 25, 2007
Wednesday, October 24, 2007
Monday, October 22, 2007
Friday, October 19, 2007
Skiing
I never managed to post these. Marshall and I went skiing in the north Bridgers last Wednesday on my birthday. We both work at the university where apparently it's ok to just not show up all day if you don't want to. It was a really nice day and the skiing was surprisingly good. We skied "the Great One" which is a north facing and very well shaded chute that is well known around here because it will hold snow well into summer. Or, in our case, will hold snow that fell early in the fall.
MORE
Tuesday, October 16, 2007
Sign Creek
Rode the Sign Creek trail outside of Sula,MT with Chad on Sunday. It was a long and fun loop in some really remote country.
We saw Moose and Elk, rode through snow for a while and had a great time. I rode a Ventana El Rey that Chad let me try out. It has wheels that are 29" in diameter, 3" larger then a standard 26" mountain bike wheel.
bigger wheels decrease the contact angle with obstacles, which in turn decreases the amount of forward momentum the rider loses while rolling over said obstacles. Or so they say. After around 5 hours of rolling around on it I agree. You can roll over rocks that are around 2" tall without slowing down much at all. The bike handles really well and I instantly felt comfortable riding it. At first it didn't feel as good as my current bike at high speeds, but was just as capable once I got used to it. MORE PICTURES
That's Trapper Peak
Monday, October 15, 2007
Cider Party
Made a little bit of cider from a lot of apples. It's tasty, I think I'll go get myself a glass right now. . .
Subscribe to:
Posts (Atom)