(HP-65) The destructive bond pull test
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01-12-2019, 12:45 PM
Post: #2
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RE: (HP-65) The destructive bond pull test
For those who want to run the program in an emulator:
Code: 001: 23 : LBL Quote:The angular variables \(\theta_t\) and \(\theta_d\), are often difficult to measure. However, the angles may be related to the variables \(h\), \(H\), \(d\), and \(\epsilon\) which are more easily accessible to measurement. However it's much easier to calculate these angular variables using rectangle-to-polar coordinate transformation: \((\epsilon d,h)\rightarrow(r_t, \theta_t)\) \(((1-\epsilon)d,h+H)\rightarrow(r_d, \theta_d)\) And then use the original formulas to calculate: \( F_{wt}=F\frac{\cos(\theta_d-\phi)}{\sin(\theta_t+\theta_d)} \) \( F_{wd}=F\frac{\cos(\theta_t+\phi)}{\sin(\theta_t+\theta_d)} \) Here's my attempt: Code: 001: 34 01 : RCL 1 h Example: Registers 01: 11.6 02: 3.5 03: 38.5 04: 0.375 05: 100 06: 20 R/S 103.48 x<>y 54.85 In addition to the that the angles \(\theta_t\) and \(\theta_d\) can be found in registers: 07: 38.78059606 08: 32.10960583 The exact values are: 54.85453818 103.4771281 Compare these to the result of the original program: 54.85453822 103.4771281 Cheers Thomas |
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(HP-65) The destructive bond pull test - SlideRule - 01-09-2019, 02:30 PM
RE: (HP-65) The destructive bond pull test - Thomas Klemm - 01-12-2019 12:45 PM
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